Search Results: "noble gas configuration electronic structure atoms chemistry khan academy"

All Most Recent Most Viewed

02:36 Popular
How To Interpret An Expression With Function Notation | Functions | Algebra I | Khan Academy

1,968 views / 0 likes - added 8 years ago

Sal interprets the expression P(5) minor P(9) where P models the number of people at the beach over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/interpreting-function-notation
07:02 Popular
Manipulating Quadratic And Exponential Expressions — Harder Example | Math | New SAT | Khan Academy

2,354 views / 0 likes - added 8 years ago

Watch Sal work through a harder Manipulating quadratic and exponential expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p3-easier?utm_source=YT&utm_medi
03:42 Popular
Manipulating Quadratic And Exponential Expressions — Basic Example | Math | New SAT | Khan Academy

1,063 views / 0 likes - added 8 years ago

Watch Sal work through a basic Manipulating quadratic and exponential expressions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-passport-advanced-mathematics/v/sat-math-p2-harder?utm_source=YT&utm_mediu
03:18 Popular
Counting Dollars | Measurement And Data | Early Math | Khan Academy

717 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-money/v/counting-dollars?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: htt
08:30 Popular
Multiplying And Dividing Negative Numbers | Pre-Algebra | Khan Academy

1,842 views / 0 likes - added 8 years ago

Multiplying and dividing negative numbers Watch the next lesson: https://www.khanacademy.org/math/arithmetic/absolute-value/abs_value_tutorial/v/absolute-value-and-number-lines?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous less
02:37 Popular
Order By Length | Measurement And Data | Early Math | Khan Academy

1,674 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-length-intro/e/order-by-length?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesso
02:03 Popular
Comparing Numbers Of Objects | Counting | Early Math | Khan Academy

1,030 views / 1 likes - added 8 years ago

Learn what "more than" and "less than" mean. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-comparing-numbers/e/compare-groups-through-10?utm_source=YT&utm
09:17 Popular
Unit Conversion Within The Metric System | Pre-Algebra | Khan Academy

1,881 views / 0 likes - added 8 years ago

Metric unit conversion Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/metric-system-tutorial/v/converting-within-the-metric-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? http
02:34 Popular
Adding Two-digit Numbers Without Regrouping | Early Math | Khan Academy

998 views / 1 likes - added 8 years ago

Learn to add 23 + 45 thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-subtract-100/e/addition_3?utm_source=YT&utm_medium=Desc&ut
02:16 Popular
Center, Spread, And Shape Of Distributions — Harder Example | Math | New SAT | Khan Academy

1,345 views / 0 likes - added 8 years ago

Watch Sal work through a harder Center, spread, and shape of distributions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-problem-solving-data-analysis/v/sat-math-q10-easier?utm_source=YT&utm_medium=Desc
04:25 Popular
Using Crayons | Addition And Subtraction Within 100 | Early Math | Khan Academy

863 views / 1 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-sub-100-word-problems/e/addition-and-subtraction-word-problems-within-100--level-2?utm_source=YT&utm_medium
02:37 Popular
Understanding Place Value When Subtracting Tens | Early Math | Khan Academy

940 views / 0 likes - added 8 years ago

Learn how to subtract 40 from 65 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-sub-ones-tens/e/subtract-with-in-100-level-1?ut
03:03 Popular
Introduction To Exponents | Pre-Algebra | Khan Academy

1,561 views / 0 likes - added 8 years ago

Taking an exponent is basically the act of repeated multiplication. You know how to multiply, right? If so, understanding exponents is completely within your grasp! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/ma
03:07 Popular
Comparing Lengths | Measurement And Data | Early Math | Khan Academy

1,563 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-compare-estimate-length/e/comparing-lengths?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch t
04:32
The Zeroth Power | Arithmetic Operations | 6th Grade | Khan Academy

615 views / 0 likes - added 8 years ago

Learn why a number raised to the zero power equals 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-arithmetic-operations/cc-6th-exponents/e/positive_and_zero_exponents?utm_source=Y
10:00
Introduction To Number Systems And Binary | Pre-Algebra | Khan Academy

615 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/hexadecimal-number-system?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.
01:31 Popular
Filling Rectangles With Squares | Geometry | Early Math | Khan Academy

1,183 views / 0 likes - added 8 years ago

Learn how to fill rectangles with squares. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/filling-rectangles-with-same-sized-squares?
02:03 Popular
Estimating Lengths | Measurement And Data | Early Math | Khan Academy

725 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-compare-estimate-length/e/estimating-lengths?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch
03:16
Understanding Place Value While Adding Tens | Early Math | Khan Academy

628 views / 0 likes - added 8 years ago

Learn how to add 23 + 30 by thinking about place value. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens/e/add-within-100--level-1?utm_source=YT&u
02:27 Popular
Checking Ordered Pair Solutions To Equations Example 2 | Algebra I | Khan Academy

1,055 views / 0 likes - added 8 years ago

Second example of ordered pair solutions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?utm_so
03:43 Popular
Converting From Decimal To Hexadecimal Representation | Pre-Algebra | Khan Academy

1,435 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/binary-addition?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/p
02:35 Popular
Checking Ordered Pair Solutions To Equations Example 1 | Algebra I | Khan Academy

1,270 views / 0 likes - added 8 years ago

Checking ordered pair solutions to equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/plugging_in_values?ut
02:37 Popular
How To Write Basic Expressions With Variables | 6th Grade | Khan Academy

848 views / 0 likes - added 8 years ago

Learn how to write basic algebraic expressions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-writing-expressions/e/writing-expressions-with-variabl
12:49 Popular
Scientific Notation Examples | Pre-Algebra | Khan Academy

1,167 views / 0 likes - added 8 years ago

More scientific notation examples Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/scientific_notation?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra W
04:31 Popular
Counting American Coins | Measurement And Data | Early Math | Khan Academy

738 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-money/v/counting-dollars?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: htt
02:39 Popular
Proportionality Between Side Length And Perimeter | 7th Grade | Khan Academy

843 views / 0 likes - added 8 years ago

Is the perimeter of a square proportional to the side length of the square? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-
03:45 Popular
Angles, Arc Lengths, And Trig Functions — Harder Example | Math | New SAT | Khan Academy

1,021 views / 0 likes - added 8 years ago

Watch Sal work through a harder Angles, arc lengths, and trig functions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s5-easier?utm_source=YT&utm_medium=Desc&utm_campai
03:52 Popular
Angles, Arc Lengths, And Trig Functions — Basic Example | Math | New SAT | Khan Academy

879 views / 0 likes - added 8 years ago

Watch Sal work through a basic Angles, arc lengths, and trig functions problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s4-harder?utm_source=YT&utm_medium=Desc&utm_campaig
03:21 Popular
Introduction To Perimeter | Measurement | Pre-Algebra | Khan Academy

788 views / 0 likes - added 8 years ago

Find perimeter by adding side-lengths of various figures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/perimeter/e/perimeter_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Wa
07:11 Popular
Graphing Solutions To Two-variable Linear Equations Example 2 | Algebra I | Khan Academy

2,050 views / 0 likes - added 8 years ago

Graphing solutions to 2 variable linear equations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/two-var-linear-equations-and-intro-to-functions/solutions-to-two-var-linear-equations/e/graphing-solutio
06:17 Popular
Solving Percent Problems | Decimals | Pre-Algebra | Khan Academy

890 views / 0 likes - added 8 years ago

We'll use algebra to solve this percent problem. Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-word-probs-pre-alg/v/solving-percent-problems-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the
03:37
Starfish Rulers | Addition And Subtraction Within 100 | Early Math | Khan Academy

686 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-more-fewer-100/e/addition-and-subtraction-word-problems-within-100--level-4?utm_source=YT&utm_medium=Desc&utm_c
02:53 Popular
More Word Problems | Addition And Subtraction Within 100 | Early Math | Khan Academy

940 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-more-fewer-100/e/addition-and-subtraction-word-problems-within-100--level-3?utm_source=YT&utm_medium=Desc&utm_c
04:06 Popular
Making 5 | Basic Addition And Subtraction | Early Math | Khan Academy

1,262 views / 0 likes - added 8 years ago

Learn how to add numbers to make 5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-making-5-9/e/making-five?utm_source=YT&utm_medium=Desc&utm_campaign=Earl
02:48 Popular
Picture Graphs | Measurement And Data | Early Math | Khan Academy

1,526 views / 0 likes - added 8 years ago

Read and interpret a picture graph. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-picture-graphs/e/solving-problems-with-picture-graphs-1?utm_source=YT&utm
04:40 Popular
Measuring Lengths 2 | Measurement And Data | Early Math | Khan Academy

750 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-measuring-length/e/measuring-lengths-2?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the ne
04:56 Popular
Equal Sign | Addition And Subtraction Within 20 | Early Math | Khan Academy

781 views / 0 likes - added 8 years ago

Learn what the equals sign really means. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-equals-sign/e/meaning-of-equal-sign-1?utm_source=YT&utm_medium=Desc&utm
03:52 Popular
Ben Eater Eats The Numbers | Counting | Early Math | Khan Academy

1,223 views / 0 likes - added 8 years ago

Learn how to find which numbers are missing in a number grid. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-numbers-120/e/count-from-any-number?utm_source
04:19
Snow On Friday | Addition And Subtraction Within 100 | Early Math | Khan Academy

659 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-sub-100-word-problems/e/addition-and-subtraction-word-problems-within-100--level-2?utm_source=YT&utm_medium
02:54 Popular
Measuring Lengths With Different Units | Measurement And Data | Early Math | Khan Academy

1,324 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-measuring-length/e/measuring-lengths-with-different-units?utm_source=YT&utm_medium=Desc&utm_campaign=Ear
01:54 Popular
Missing Numbers Between 0 And 120 | Counting | Early Math | Khan Academy

1,381 views / 0 likes - added 8 years ago

Learn how to find missing numbers between 0 and 120. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-numbers-120/e/count-to-100?utm_source=YT&utm_medium=Des
20:48 Popular
Introduction To Scientific Notation | Pre-Algebra | Khan Academy

1,960 views / 0 likes - added 8 years ago

Introduction to scientific notation. An in-depth discussion about why and how scientific notation is used. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/scientific-notation/e/sc
05:32
Exercising Gorillas | Addition And Subtraction Within 20 | Early Math | Khan Academy

692 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-word-problems-within-20/e/addition-and-subtraction-word-problems-within-20--level-2?utm_source=YT&utm_medium=Des
02:48 Popular
Adding In Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,037 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/binary-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/
07:48 Popular
Introduction To The SAT Writing & Language Test | Tips & Planning | New SAT | Khan Academy

768 views / 0 likes - added 8 years ago

This is the last video in our New SAT subject! Missed the previous lesson? https://www.khanacademy.org/test-prep/new-sat/new-sat-tips-planning/new-sat-about-sat/v/sat-reading-test-intro?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT New SAT (starting M
05:50 Popular
Length Word Problems | Measurement And Data | Early Math | Khan Academy

935 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-length-word-problems/e/length-word-problems?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch t
03:05 Popular
Equal Parts Of Circles And Rectangles | Geometry | Early Math | Khan Academy

1,366 views / 1 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/equal-parts-of-circles-and-rectangles?utm_source=YT&utm_medium=Desc&utm_campaign=Early
02:58 Popular
Monkeys For A Party | Place Value (tens And Hundreds) | Early Math | Khan Academy

706 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-teens/e/teen-numbers-1?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: https:
04:05 Popular
How To Find Mistakes In One Step Equations | 6th Grade | Khan Academy

757 views / 0 likes - added 8 years ago

Learn how to spot mistakes in someone else's work as they attempt to solve one-step equations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-one-st
03:00 Popular
Inverse Property Of Addition | Arithmetic Properties | Pre-Algebra | Khan Academy

1,790 views / 0 likes - added 8 years ago

The simple idea that a number plus its negative is 0 Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/order-of-operations/arithmetic_properties/v/inverse-property-of-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra M
07:40 Popular
Comparing Numbers Represented In Different Ways | 4th Grade | Khan Academy

746 views / 0 likes - added 8 years ago

Examples of Khan Academy practice problems where you compare decimals, fractions, and number diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimal
03:09 Popular
Making Line Plots | Measurement And Data | Early Math | Khan Academy

1,163 views / 0 likes - added 8 years ago

Making line plots. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-line-plots/e/creating-line-plots-1?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMa
03:50
Adjectives and commas | Adjectives | Khan Academy

700 views / 1 likes - added 6 years ago

When using more than one adjective, sometimes you put a comma between them and sometimes you don't. Learn how to tell when you need a comma in this video! Practice this yourself on Khan Academy right now: https://www.khanacademy.org/the-modifier/e/commas-
02:57 Popular
Banana Proportionality | Rated And Proportional Relationships | 7th Grade | Khan Academy

1,647 views / 0 likes - added 8 years ago

A proportionality problem about eating bananas Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-identifying-proportional-rela
09:16 Popular
Adding/subtracting Negative Numbers | Pre-Algebra | Khan Academy

1,356 views / 0 likes - added 8 years ago

Adding and subtracting negative numbers Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/negatives-absolute-value-pre-alg/mult-div-negatives-pre-alg/v/multiplying-positive-and-negative-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=
02:17 Popular
Pieces Of Fruit | Basic Addition And Subtraction | Early Math | Khan Academy

986 views / 0 likes - added 8 years ago

Learn how to add fruit (by putting fruit together) and sutract fruit (by taking fruit away). Examples used are 5+3 and 5-3. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basic
02:00 Popular
Adding To 10 | Basic Addition And Subtraction | Early Math | Khan Academy

1,366 views / 0 likes - added 8 years ago

Learn that if we have 3 bananas, then we need 7 more bananas to make 10 bananas. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-make-10/e/making-ten-2?utm_
03:27 Popular
How To Evaluate Expressions In Two Variables With Decimals And Fractions | 6th Grade | Khan Academy

1,014 views / 0 likes - added 8 years ago

Learn how to evaluate expressions that have two different variables in them by using a technique called substitution (or "plugging in"). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6t
03:53
Adding 7 + 6 | Addition And Subtraction Within 20 | Early Math | Khan Academy

660 views / 0 likes - added 8 years ago

Learn how to add 7 + 6 using the number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-add-20/e/addition_2?utm_source=YT&utm_medium=Desc&utm_campaign=Ear
03:19 Popular
Adding 8 + 7 | Addition And Subtraction Within 20 | Early Math | Khan Academy

713 views / 0 likes - added 8 years ago

Learn how to add 8 + 7 by making a group of ten. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-add-20/e/addition_2?utm_source=YT&utm_medium=Desc&utm_campaign=
02:36 Popular
Counting By Tens Examples | Addition And Subtraction Within 100 | Early Math | Khan Academy

841 views / 0 likes - added 8 years ago

Learn to count by tens. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/skip-counting-by-10s?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMa
03:36 Popular
Approximating Irrational Number Exercise Example | Pre-Algebra | Khan Academy

1,513 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/rational-irrational-numbers/e/approximating-irrational-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex
02:12 Popular
Fewer Word Problems | Addition And Subtraction Within 100 | Early Math | Khan Academy

863 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-more-fewer-100/e/addition-and-subtraction-word-problems-within-100--level-3?utm_source=YT&utm_medium=Desc&utm_c
03:46 Popular
Testing Whether Area Is Proportional To Side Length | 7th Grade | Khan Academy

1,181 views / 0 likes - added 8 years ago

Is the volume of a square proportional to the side length of the square? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-ratio-proportion/cc-7th-proportional-rel/e/analyzing-and-ide
02:54 Popular
How To Describe Real-world Situations With Inequalities | 6th Grade | Khan Academy

1,155 views / 0 likes - added 8 years ago

Learn how to write inequalities to model real-world situation. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-inequalities/e/inequalities-in-one-var
06:56 Popular
Exponents And Powers Of Zero Patterns | Pre-Algebra | Khan Academy

1,118 views / 0 likes - added 8 years ago

Now that we understand how to interpret an exponent and how the patterns in zeros are related to the exponent, we can solve more complicated problems! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra
03:23 Popular
Spots On A Die | Addition And Subtraction Within 100 | Early Math | Khan Academy

759 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-more-fewer-100/e/addition-and-subtraction-word-problems-within-100--level-4?utm_source=YT&utm_medium=Desc&utm_c
04:32 Popular
How To Solve One-step Equations With Fractions And Decimals | 6th Grade | Khan Academy

1,860 views / 0 likes - added 8 years ago

Learn how to solve one-step addition and subtraction equations that have fractions and decimals in them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-
03:00 Popular
Teens As Sums With 10 | Place Value (tens And Hundreds) | Early Math | Khan Academy

727 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-teens/e/teen-numbers-1?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: https:
03:40 Popular
Comparing Decimals Visually Example | 4th Grade | Khan Academy

980 views / 0 likes - added 8 years ago

Learn how to compare decimals using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals-visually/e/comparing-decimals-visually?utm_source=
04:03
Subtracting 14 - 6 | Addition And Subtraction Within 20 | Early Math | Khan Academy

694 views / 0 likes - added 8 years ago

Learn how to subtract 14 - 6 by first thinking about subtracting 2 and 4. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-sub-20/e/subtraction_2?utm_source=YT&u
02:10 Popular
Subtract Tens Exercise | Addition And Subtraction Within 100 | Early Math | Khan Academy

723 views / 1 likes - added 8 years ago

Learn how to add and subtract tens. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-sub-ones-tens/e/subtract-tens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea
02:16
Telling Time Exercise Example 2 | Measurement And Data | Early Math | Khan Academy

679 views / 0 likes - added 8 years ago

Tell time on unlabeled analog clocks. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-time/e/telling_time?utm_source=YT&utm_medium=Desc&utm_campaign=Ear
02:05 Popular
Skip Counting By 5 Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

772 views / 0 likes - added 8 years ago

Learn to count by fives. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/skip-counting-by-5s?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMa
05:40
BONUS: History of the apostrophe | The Apostrophe | Punctuation | Khan Academy

467 views / 0 likes - added 6 years ago

The apostrophe has a bizarre history, including being the name for something that's not really related to grammar at all. David, Paige, and special guest Jake explain. Watch the next lesson: https://www.khanacademy.org/humanities/grammar/punctuation/the-a
03:38 Popular
Sea Monsters And Superheroes | Addition And Subtraction Within 20 | Early Math | Khan Academy

740 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-word-problems-within-20/e/addition-and-subtraction-word-problems-within-20--level-1?utm_source=YT&utm_medium=Des
04:28 Popular
Adding And Subtracting On Number Line Word Problems | Early Math | Khan Academy

1,428 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-sub-100-word-problems/e/adding-and-subtracting-on-the-number-line-word-problems?utm_source=YT&utm_medium=De
02:07 Popular
Percentage Of A Whole Number | Decimals | Pre-Algebra | Khan Academy

1,530 views / 0 likes - added 8 years ago

We hope you're beginning to see that there's more than one way to skin a cat. In other words, there are several different ways to solve problems involving percentages, decimals, and fractions. Watch as find the percentage of a whole number. Watch the next
05:34 Popular
Multiplying Positive And Negative Numbers | Pre-Algebra | Khan Academy

1,383 views / 0 likes - added 8 years ago

Learn some rules of thumb for multiplying positive and negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/absolute-value/mult_div_negatives/e/multiplying_and_dividing_negative_numbers?
01:31 Popular
Comparing Small Numbers On The Number Line | Counting | Early Math | Khan Academy

1,625 views / 0 likes - added 8 years ago

Learn to use a number line to compare numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-comparing-numbers/e/comparing-numbers-through-10?utm_source=Y
03:23 Popular
Comparison Word Problems | Addition And Subtraction Within 20 | Early Math | Khan Academy

933 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-word-problems-more-fewer-20/e/addition-and-subtraction-word-problems-within-20--level-3?utm_source=YT&utm_medium
03:31
Fence Posts For Horses | Addition And Subtraction Within 100 | Early Math | Khan Academy

687 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-sub-100-word-problems/e/addition-and-subtraction-word-problems-within-100--level-1?utm_source=YT&utm_medium
07:34 Popular
Hexadecimal Number System | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,100 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/decimal-to-binary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math
02:51
Telling Time Exercise Example 1 | Measurement And Data | Early Math | Khan Academy

656 views / 0 likes - added 8 years ago

Tell time on a labeled analog clock. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-time/e/telling_time_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=
03:59 Popular
Adding Ten Or One Hundred | Addition And Subtraction Within 100 | Early Math | Khan Academy

827 views / 1 likes - added 8 years ago

Learn how to add 1, 10, or 100 to a number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens-hundreds/e/add-within-1000--level-1?utm_source=YT&utm
02:57 Popular
Reading Bar Graph Examples | Measurement And Data | Early Math | Khan Academy

1,637 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-bar-graphs/e/solving-problems-with-bar-graphs-1?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Wat
02:38 Popular
Adding 5 + 3 + 6 | Addition And Subtraction Within 20 | Early Math | Khan Academy

717 views / 0 likes - added 8 years ago

Learn how to add 5 + 3 + 6. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-20/cc-early-math-add-20/e/adding-three-numbers?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath W
08:13 Popular
Prime Numbers | Factors And Multiples | Pre-Algebra | Khan Academy

1,169 views / 0 likes - added 8 years ago

What does it mean to be a prime number? Let's progress though some whole numbers and ask ourselves if they meet the criteria. What is the criteria you ask? Watch. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math
07:51 Popular
Volume: How To Measure It | Measurement | Pre-Algebra | Khan Academy

786 views / 0 likes - added 8 years ago

Volume is a measurement in the 3rd dimension. This means that it not only has width and height, but it has depth as well. Let's watch this video in which we get a great explanation of how we measure volume. Practice this lesson yourself on KhanAcademy.org
04:19
Cousin Fal's Shape Collection | Geometry | Early Math | Khan Academy

694 views / 0 likes - added 8 years ago

Learn how to classify shapes based on their number of sides, number of corners, and side-lengths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-shapes/e/n
03:37 Popular
Adding Hundreds, Tens, And Ones | Addition And Subtraction Within 100 | Early Math | Khan Academy

940 views / 0 likes - added 8 years ago

Learn how to add three-digit numbers by adding ones, tens, and hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-ones-tens-hundreds/e/add-within-10
03:52 Popular
Converting From Decimal To Binary | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,519 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/alternate-number-bases/v/large-number-decimal-to-binary?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanaca
04:21 Popular
How To Write One-step Equations For Word Problems | 6th Grade | Khan Academy

1,456 views / 0 likes - added 8 years ago

Learn how to write basic equations to model real-world situations. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-equations-and-inequalities/cc-6th-super-yoga/e/equations-in-one-vari
03:33 Popular
Losing Tennis Balls | Addition And Subtraction Within 100 | Early Math | Khan Academy

742 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-add-sub-100-word-problems/e/addition-and-subtraction-word-problems-within-100--level-1?utm_source=YT&utm_medium
04:11 Popular
Subtracting Ten Or One Hundred | Addition And Subtraction Within 100 | Early Math | Khan Academy

2,216 views / 0 likes - added 8 years ago

Learn how to subtract 1, 10, or 100 from a number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-sub-ones-tens-hundreds/e/subtract-within-1000--level-1?utm_s
07:00
Abstract-ness | Introduction To Algebra | Algebra I | Khan Academy

642 views / 0 likes - added 8 years ago

The general idea behind the word 'abstract' Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/the-beauty-of-algebra?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Missed the previous lesson? h
05:20 Popular
Order Of Operations: PEMDAS | Arithmetic Properties | Pre-Algebra | Khan Academy

1,915 views / 0 likes - added 8 years ago

Work through another challenging order of operations example with only positive numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/order-of-operations/order_of_operations/e/order_of_operations
04:42 Popular
How To Write Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

1,287 views / 0 likes - added 8 years ago

Learn how to write expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-alg-e
05:15 Popular
Thinking About The Changing Values Of Variables And Expressions | 6th Grade | Khan Academy

842 views / 0 likes - added 8 years ago

Explore how the value of an algebraic expression changes as the value of its variable changes. The algebraic expressions used in this video are 100-x, 5/x + 5, and (3y)/(2y). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacad
01:54 Popular
Getting To 10 By Filling Boxes | Basic Addition And Subtraction | Early Math | Khan Academy

796 views / 0 likes - added 8 years ago

Learn how to add two numbers to make 10. This video shows two examples: 3 + ___ = 10 and 6 + ___ = 10. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-make-
03:33 Popular
Finding A Percentage | Decimals | Pre-Algebra | Khan Academy

1,258 views / 0 likes - added 8 years ago

Once again, fractions are our friends as we use them to find a percentage. You'll also see a couple of different ways to arrive at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimal
04:31 Popular
Number Patterns: Interpreting Relationships | Pre-Algebra | Khan Academy

1,541 views / 0 likes - added 8 years ago

Examining the points on a number line and interpreting the patterns to discover the relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/number-patterns/e/vis
04:08 Popular
Measuring A Golden Statue | Measurement And Data | Early Math | Khan Academy

754 views / 0 likes - added 8 years ago

Measure an object with same-size length units that span it with no gaps or overlaps. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-picture-graphs/e/solving
01:34 Popular
Solving Ratio Problems With Graph | Pre-Algebra | Khan Academy

1,941 views / 0 likes - added 8 years ago

In this example we'll plot points on the x and y axis to reflect the given ratios. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/solving-ratio-problems-wi
03:09 Popular
How To Write Basic Algebraic Expressions From Word Problems | 6th Grade | Khan Academy

949 views / 0 likes - added 8 years ago

Learn how to write basic expressions with variables to describe situations described in word problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th
06:55 Popular
Place Value For Decimals Greater Than One (examples) | 4th Grade | Khan Academy

1,172 views / 1 likes - added 8 years ago

Understand decimal numbers that are greater than 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-greater-than-one/e/decimals-greater-than-one-intuition?ut
01:43 Popular
Solving Problems With Bar Graphs 2 | Measurement And Data | Early Math | Khan Academy

1,341 views / 1 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-bar-graphs/e/solving-problems-with-bar-graphs-2?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Wat
04:17 Popular
Introduction To Area And Unit Squares | Measurement | Pre-Algebra | Khan Academy

1,602 views / 0 likes - added 8 years ago

Cover figures with square units to find their area. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/measurement/area-basics/e/measuring-area-with-unit-squares?utm_source=YT&utm_medium=Desc&utm_campa
06:14 Popular
How To Plot Inequalities On A Number Line | Pre-Algebra | Khan Academy

1,524 views / 0 likes - added 8 years ago

Learn how to graph an inequality on a number line to indicate which values make it true. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writin
05:05 Popular
Solving Ratio Problems With Tables Example 1 | Pre-Algebra | Khan Academy

887 views / 0 likes - added 8 years ago

We're displaying ratios in a table format here, and then asking: given a ratio, solve for equivalent ratios. Here are a few examples to practice on. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/r
04:16 Popular
Least Common Multiple Exercise | Factors And Multiples | Pre-Algebra | Khan Academy

1,142 views / 0 likes - added 8 years ago

We're practicing finding the least common multiple in these example exercises. We'll teach you the prime factorization approach which is a pretty nifty way to find the lcm (least common multiple). Practice this lesson yourself on KhanAcademy.org right now
04:58 Popular
Comparing Fractions Of Different Wholes | Fractions | 3th Grade | Khan Academy

1,473 views / 0 likes - added 8 years ago

Comparing fractions of different wholes Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-third-grade-math/cc-3rd-fractions-topic/cc-3rd-different-wholes/e/naming-the-whole?utm_source=YT&utm_medium=Desc&utm_ca
03:38 Popular
Math Patterns Example 1 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

720 views / 0 likes - added 8 years ago

Part of our exploration of math is learning to identify patterns among numbers. Can you see the pattern in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_mediu
04:08 Popular
Plotting Decimal Numbers On A Number Line (examples) | Khan Academy

913 views / 0 likes - added 8 years ago

Learn how to find decimals with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-number-line/e/decimals_on_the_number_line_2?utm_
04:07 Popular
Adding And Subtracting Negative Numbers | Pre-Algebra | Khan Academy

1,338 views / 0 likes - added 8 years ago

Learn how to add and subtract negative numbers. The problems solved in this video are 2 - 3 = -1 and -2 - 3 = -5 and -2 + 3 = 1 and 2 - (-3) = 5 and -2 - (-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pr
03:09 Popular
Simplifying Square Roots | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,769 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.kh
03:06 Popular
Decimal Intuition With Grids (examples) | Decimals | 4th Grade | Khan Academy

1,258 views / 0 likes - added 8 years ago

Deepen your understanding of decimal numbers by thinking about grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-intro/e/decimal-intuition-with-
05:41 Popular
Math Patterns Example 2 | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

712 views / 0 likes - added 8 years ago

We continue to strengthen our skill in identifying patterns. This time we'll use a table to track the pattern. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/exercise/math-patterns?utm_source=YT&utm_medium=Desc&utm
04:20 Popular
Visually Converting From Tenths To Hundredths | 4th Grade | Khan Academy

1,191 views / 0 likes - added 8 years ago

Learn how to convert fractions from tenths to hundredths using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/equivale
04:37 Popular
Fraction-decimal Intuition Problems (examples) | 4th Grade | Khan Academy

1,035 views / 0 likes - added 8 years ago

Understand the connection between decimals and fractions using a grid diagram. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimal-fractions/e/fraction-decimal-in
02:49 Popular
Percent Word Problem Example 2 | Decimals | Pre-Algebra | Khan Academy

1,182 views / 0 likes - added 8 years ago

It's nice to practice conversion problems, but how about applying our new knowledge of percentages to a real life problem like recycling? Hint: don't forget your long division! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanac
04:21
Introduction To The SAT Reading Test | Tips & Planning | New SAT | Khan Academy

615 views / 0 likes - added 8 years ago

Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-tips-planning/new-sat-about-sat/v/sat-writing-test-intro?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previous lesson? https://www.khanacademy.org/test-prep/new-s
03:21 Popular
Rational Number Word Problem With Fractions | Pre-Algebra | Khan Academy

1,717 views / 0 likes - added 8 years ago

Word problems force us to put concepts to work using real-world applications. In this example, determine the volume of frozen water and express the answer as a fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.o
03:28 Popular
Inequality Word Problems | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,664 views / 0 likes - added 8 years ago

We're writing inequalities by using information from the word problems. Woohoo! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/greater-than-less-than/e/writing-numeric
1:10:07
Khan Academy Live: AP Calculus

592 views / 0 likes - added 6 years ago

Taking AP Calculus? Prep for the exam with our free live tutoring session. Dave, one of our calculus experts, will review key concepts, solve sample questions, and share ways to avoid common mistakes. Prep for your AP Calculus exams on Khan Academy: https
07:18 Popular
Origins Of Algebra | Introduction To Algebra | Algebra I | Khan Academy

1,208 views / 0 likes - added 8 years ago

Where did the word "Algebra" and its underlying ideas come from? Watch the next lesson: https://www.khanacademy.org/math/algebra/introduction-to-algebra/overview_hist_alg/v/abstract-ness?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraI Algebra I on Kha
02:36 Popular
Number Patterns: Seeing Relationships | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,041 views / 0 likes - added 8 years ago

Laying the foundation for algebraic thinking by learning to recognize the relationships between patterns and graphing out those relationships. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applyin
06:20 Popular
Greatest Common Factor Explained | Factors And Multiples | Pre-Algebra | Khan Academy

1,181 views / 0 likes - added 8 years ago

Here's a nice explanation of least common factor (or least common divisor) along with a few practice example exercises. Let's roll. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/factors-multiples/
01:47 Popular
Decompose Hundredths On Number Line | Fractions | 4th Grade | Khan Academy

1,578 views / 0 likes - added 8 years ago

Learn how to decompose a fraction with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fraction
08:34 Popular
LCM And GCF Word Problems | Factors And Multiples | Pre-Algebra | Khan Academy

1,857 views / 1 likes - added 8 years ago

Here we have a couple of word problems--one searching for the least common multiple and the other for the greatest common factor. Just read them with us slowly and follow along. You'll get it. Practice this lesson yourself on KhanAcademy.org right now: ht
03:40 Popular
Multi-step Word Problem With Decimals And Subtraction | Pre-Algebra | Khan Academy

1,631 views / 0 likes - added 8 years ago

First visualize this word problem then use subtraction and multiplication of decimals and fractions to get at the answer. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topi
07:14
Content Changes To The New SAT | Tips & Planning | New SAT | Khan Academy

648 views / 0 likes - added 9 years ago

Sal covers the major content changes to the new SAT. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-tips-planning/new-sat-about-sat/v/sat-math-test-intro?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed the previous l
00:56 Popular
Counting With Small Numbers | Counting | Early Math | Khan Academy

896 views / 0 likes - added 8 years ago

Learn how to count squirrels and horses. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-counting/e/counting-out-1-20-objects?utm_source=YT&utm_medium=Desc&
06:55 Popular
What Are Variables, Expressions, And Equations? | Introduction To Algebra | Algebra I | Khan Academy

1,710 views / 0 likes - added 8 years ago

Learn what variables, expressions, and equations really are. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/introduction-to-algebra/feel-for-equations-and-inequalit/e/dependent-and-independent-variable
00:52 Popular
Reading Bar Charts: Basic Example | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,376 views / 0 likes - added 8 years ago

Let's start with this bar chart that brings back the days of Harry Potter! Putting our toes in the water on this one... Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-topic/
09:43 Popular
Exponent Rules Part 1 | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,593 views / 0 likes - added 8 years ago

Introduction to exponent rules Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/exponent-properties/e/exponent_rules?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the
02:27 Popular
Inequality Word Problem: One Variable | Applying Mathematical Reasoning | Pre-Algebra | Khan Academy

1,043 views / 0 likes - added 8 years ago

This time we're creating a variable to represent a number, and then writing an inequality. We're building on our knowledge. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/applying-math-reasoning-to
16:36 Popular
Writing: Informative — How-to Example | Reading & Writing | New SAT | Khan Academy

921 views / 0 likes - added 8 years ago

Watch Sal work through an SAT Writing: Informative passage. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-reading-writing/new-sat-writing-passages/v/sat-writing-narrative?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Mis
07:23 Popular
Introduction To Transformations | Transformations | Geometry | Khan Academy

1,753 views / 0 likes - added 8 years ago

Introduction to transformations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-translations-on-the-coordinate-plane?utm_source=YT&utm_medium=De
21:02 Popular
Writing: Argument — How-to Example | Reading & Writing | New SAT | Khan Academy

776 views / 0 likes - added 8 years ago

Watch Sal work through an SAT Writing: Argument passage. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-reading-writing/new-sat-writing-passages/v/sat-writing-informational-passage?utm_source=YT&utm_medium=Desc&utm_campaign=N
1:02:43
Khan Academy Live: AP US History

661 views / 0 likes - added 6 years ago

Taking AP US History? Prep for the AP exam with our free live tutoring session. Kim, our history expert, will share tips and strategies for the exam. Study for AP US History on Khan Academy: https://www.khanacademy.org/humanities/us-history/ap-us-history
03:21
GPT-4o (Omni) math tutoring demo on Khan Academy

25 views / 0 likes - added 1 month ago

New GPT-4o (Omni) tutoring demo: My new book BRAVE NEW WORDS: HOW AI WILL REVOLUTIONIZE EDUCATION comes out tomorrow. What is described in this book is happening fast... My son and I filmed this last week at OpenAI that gives a glimpse of this happening o
04:19 Popular
Place Value Example With 42 | Place Value (tens And Hundreds) | Early Math | Khan Academy

789 views / 0 likes - added 8 years ago

Learn to see 42 as 4 tens and 2 ones. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-tens/e/groups-of-tens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea
02:55 Popular
Place Value Example With 25 | Place Value (tens And Hundreds) | Early Math | Khan Academy

715 views / 0 likes - added 8 years ago

Learn to see 25 as 2 tens and 5 ones. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/cc-early-math-tens/e/groups-of-tens?utm_source=YT&utm_medium=Desc&utm_campaign=Ea
05:59 Popular
Introduction To Place Value | Place Value (tens And Hundreds) | Early Math | Khan Academy

1,012 views / 1 likes - added 8 years ago

Learn why we use a "ones place" and a "tens place" when writing numbers. This video uses the number 37 as an example. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-place-value-topic/c
03:39 Popular
Introduction To Subtraction | Basic Addition And Subtraction | Early Math | Khan Academy

754 views / 0 likes - added 8 years ago

Learn what it means to subtract. The examples used in this video are 4-3 and 5-2. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-sub-intro/e/subtractio
02:49 Popular
Skip Counting By 100 Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

807 views / 0 likes - added 8 years ago

Learn to count by hundreds. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/skip-counting-by-100s?utm_source=YT&utm_medium=Desc&utm_campaign=Ea
01:58 Popular
Counting In Order | Counting | Early Math | Khan Academy

920 views / 0 likes - added 8 years ago

Learn how to count without making mistakes. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-counting/e/counting-objects?utm_source=YT&utm_medium=Desc&utm_ca
03:11
Introduction To Addition | Basic Addition And Subtraction | Early Math | Khan Academy

672 views / 0 likes - added 8 years ago

Learn what it means to add. The examples used in this video are 1+1 and 2+3. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-sub-intro/e/addition_1?utm_
03:36
Addition Using Groups Of 10 Intro | Addition And Subtraction Within 100 | Early Math | Khan Academy

694 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-making-groups-of-ten/e/making-100?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: h
01:45 Popular
Counting Dogs, Mice, And Cookies | Counting | Early Math | Khan Academy

753 views / 0 likes - added 8 years ago

Learn how to count animals organized in different patterns. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-count-object-topic/e/how-many-objects-2?utm_sour
01:03 Popular
Counting Whales, Sheep, And Flowers | Counting | Early Math | Khan Academy

751 views / 0 likes - added 8 years ago

Learn how to count animals. Animals in these pictures are organized neatly. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-count-object-topic/e/how-many-ob
07:43 Popular
Basic Addition | Addition And Subtraction | Arithmetic | Khan Academy

1,298 views / 1 likes - added 8 years ago

Introduction to addition. Multiple visual ways to represent addition. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/addition-subtraction/basic_addition/e/addition_1?utm_source=YT&utm_medium=Desc&ut
02:10 Popular
Repeated Addition Example | Addition And Subtraction Within 100 | Early Math | Khan Academy

729 views / 0 likes - added 8 years ago

Learn how to solve word problems by adding the same number many times. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-100/cc-early-math-skip-counting/e/repeated-addition?utm_so
03:27 Popular
How To Use The Distributive Property To Factor Out The Greatest Common Factor | Khan Academy

1,177 views / 0 likes - added 8 years ago

Learn how to apply the distributive property to factor numerical expressions (no variables). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-expressions-and-variables/cc-6th-distribut
01:13 Popular
Counting In Pictures | Counting | Early Math | Khan Academy

758 views / 0 likes - added 8 years ago

Learn how to count the number of objects you see in pictures. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-counting-topic/cc-early-math-count-object-topic/e/counting-in-scenes?utm_so
01:03 Popular
Subtraction Word Problems Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

762 views / 0 likes - added 8 years ago

Learn how to solve word problems by subtracting small numbers (numbers 10 or less). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-sub-word-problem-wit
01:42 Popular
Addition Word Problems Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

859 views / 1 likes - added 8 years ago

Learn how to solve word problems by adding small numbers (numbers 10 or less). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-sub-word-problem-within-1
10:59
The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry #3

634 views / 0 likes - added 9 years ago

Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we went from alchemists to ch
09:50 Popular
Adding And Subtracting Fractions | Fractions | Pre-Algebra | Khan Academy

2,133 views / 1 likes - added 8 years ago

How to add and subtract fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/e/adding_fractions?utm_source=YT&utm_medium=Desc&utm_campaign=PreA
04:51 Popular
Cube Root Of A Non-perfect Cube | Pre-Algebra | Khan Academy

1,280 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/cube-root-tutorial/e/cube_roots?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.khanacadem
04:33 Popular
Multiplying Negative And Positive Fractions | Fractions | Pre-Algebra | Khan Academy

884 views / 0 likes - added 8 years ago

See examples of multiplying and dividing fractions with negative numbers. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/e/multiplying_fractions?utm_
03:53 Popular
Plotting Basic Fractions On The Number Line | Fractions | Pre-Algebra | Khan Academy

1,373 views / 0 likes - added 8 years ago

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/understanding-fractions-pre-alg/e/fractions_on_the_number_line_1?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the nex
13:21 Popular
Basic Multiplication | Multiplication And Division | Arithmetic | Khan Academy

1,831 views / 2 likes - added 8 years ago

Introduction to multiplication Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/arithmetic/multiplication-division/multiplication_fun/e/multiplication_0.5?utm_source=YT&utm_medium=Desc&utm_campaign=Arithmetic Wa
01:11 Popular
Subtracting Decimals: Example 1 | Decimals | Pre-Algebra | Khan Academy

1,093 views / 1 likes - added 8 years ago

Subtracting decimals...up to the hundredths placement. Line up those decimals before you start. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/adding-decimals-pre-alg/e/subtracting
06:29 Popular
Multiplying Decimals: Place Value And Reordering | Decimals | Pre-Algebra | Khan Academy

1,395 views / 0 likes - added 8 years ago

We want you to develop an intuition about how to work with decimals. Understanding how you can rewrite decimals by considering the place value will help you multiply! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/
05:51 Popular
Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

2,134 views / 0 likes - added 8 years ago

Introduces the concept of equivalent fractions Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/equivalent-fractions-pre-alg/e/equivalent_fractions?utm_source=YT&utm_medium=Desc&utm
02:39 Popular
Comparing Decimals: Ordering From Least To Greatest | Decimals | Pre-Algebra | Khan Academy

1,949 views / 0 likes - added 8 years ago

This is a fun example where we reorder decimals from smallest to largest. You're looking for the place value that is the most significant, and then working backwards. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/
09:23 Popular
Converting Fractions To Decimals | Decimals | Pre-Algebra | Khan Academy

2,141 views / 2 likes - added 8 years ago

How to express a fraction as a decimal Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/decimal-to-fraction-pre-alg/e/converting_fractions_to_decimals?utm_source=YT&utm_medium=Desc&u
09:15 Popular
Mixed Numbers And Improper Fractions | Fractions | Pre-Algebra | Khan Academy

1,802 views / 2 likes - added 8 years ago

Converting mixed numbers to improper fractions and improper fractions to mixed numbers Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mixed-numbers-pre-alg/e/converting_mixed_numb
09:45 Popular
Simplifying Radicals | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,588 views / 1 likes - added 8 years ago

Using exponent rules to simplify radicals or square roots Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/simplifying_radicals?utm_source=YT&utm_medium=Desc&utm
14:13 Popular
Introduction To Ratios | Ratios, Proportions, Units, And Rates | Pre-Algebra | Khan Academy

1,960 views / 0 likes - added 8 years ago

What a ratio is. Simple ratio problems. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/rates-and-ratios/ratios_and_proportions/e/ratio_word_problems?utm_source=YT&utm_medium=Desc&utm_campaign=PreAl
03:50 Popular
Introduction To Multiplying Decimals | Decimals | Pre-Algebra | Khan Academy

1,176 views / 0 likes - added 8 years ago

Multiplying decimals can be confusing because there's always the question as to where the decimals goes in the answer. We're about to show you so you'll never have to question it again! Practice this lesson yourself on KhanAcademy.org right now: https://w
05:42 Popular
Understanding Division Of Fractions | Fractions | Pre-Algebra | Khan Academy

1,220 views / 0 likes - added 8 years ago

Using a number line, we'll explain the rule of "invert and multiply" when dividing two fractions. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/div-fractions-fractions-pre-alg/e/
04:20 Popular
Dividing A Whole Number By A Decimal | Decimals | Pre-Algebra | Khan Academy

1,749 views / 1 likes - added 8 years ago

When dividing a whole number by a decimal, you're going to need to change that decimal into a whole number. How? We'll show you. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/divi
09:29 Popular
Dividing Decimals With Hundredths Example 3 | Decimals | Pre-Algebra | Khan Academy

1,083 views / 0 likes - added 8 years ago

The old saying is "practice makes perfect." Let's keep practicing dividing decimals and making our divisor a whole number. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/dividing-d
07:14 Popular
Negative Exponents | Exponents, Radicals, And Scientific Notation | Pre-Algebra | Khan Academy

1,626 views / 0 likes - added 8 years ago

How does a negative exponent affect our answer? Before you assume that the answer must be negative, think again! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/negative-exponents
04:25 Popular
Multiplying Challenging Decimals | Decimals | Pre-Algebra | Khan Academy

965 views / 0 likes - added 8 years ago

Sometimes multiplying really small decimals (with all those zeros!) can be a little intimidating. Watch as we show you a handy trick to simplify these problems and solve them. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanaca
02:32 Popular
Comparing Fractions Visually With Pies | Fractions | 4th Grade | Khan Academy

1,044 views / 0 likes - added 8 years ago

Comparing fractions visually with pies Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually-comparing-fractions?utm_source=Y
03:08 Popular
Multiplying Unit Fractions And Whole Numbers | Fractions | Pre-Algebra | Khan Academy

1,667 views / 1 likes - added 8 years ago

Don't let multiplying whole numbers and fractions get you down. We got this. This explanation will help you become a pro. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplyin
03:29 Popular
Comparing Decimals Example 1 | Decimals | 4th Grade | Khan Academy

1,496 views / 1 likes - added 8 years ago

Learn how to compare decimals with tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals/e/comparing_decimals_1?utm_source=YT&utm_me
05:38 Popular
Decimals As Words | Decimals | 4th Grade | Khan Academy

1,409 views / 0 likes - added 8 years ago

Learn how to describe decimals in words. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-intro/e/decimals-in-words?utm_source=YT&utm_medium=Desc&utm_campaign
02:36 Popular
Converting Decimals To Percents | Decimals | Pre-Algebra | Khan Academy

1,527 views / 0 likes - added 8 years ago

Need to convert a decimal to a percent? Ok, we'll just use our fraction friends to get us there. Watch and be amazed. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/percent-intro-p
02:55 Popular
Comparing Fractions On A Number Line | Fractions | 4th Grade | Khan Academy

1,450 views / 0 likes - added 8 years ago

Comparing fractions on a number line Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually-comparing-fractions?utm_source=YT&
04:24 Popular
Example Of Subtracting Fractions With Unlike Denominators | Fractions | Pre-Algebra | Khan Academy

1,658 views / 0 likes - added 8 years ago

If you conquered adding fractions with different denominators, then subtracting fractions will be a snap. Don't worry...we'll take it slow and explain every step. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math
02:35 Popular
Dividing Whole Numbers And Fractions: Studying | Fractions | Pre-Algebra | Khan Academy

2,108 views / 0 likes - added 8 years ago

Solve a word problem by dividing a fraction by a whole number. The example used in this video is 1/5 ÷ 4. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg
03:45 Popular
Visualizing Equivalent Fractions | Fractions | Pre-Algebra | Khan Academy

1,097 views / 0 likes - added 8 years ago

To understand equivalent fractions it helps to "see" the fractions using something like a grid with shaded and unshaded sections representing the fraction. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-al
02:32 Popular
Dividing Whole Numbers And Fractions: Potpourri | Fractions | Pre-Algebra | Khan Academy

1,783 views / 0 likes - added 8 years ago

Solve a word problem by dividing a whole number by a fraction. The example used in this video is 4 ÷ 1/5. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/dividing-fractions-pre-alg
02:35 Popular
Comparing Fractions Visually With A Bar | Fractions | 4th Grade | Khan Academy

1,111 views / 0 likes - added 8 years ago

Learn how to compare fractions with unlike denominators by drawing bars Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually
04:11 Popular
Decomposing Hundredths Into Tenths And Hundredths | 4th Grade | Khan Academy

1,481 views / 0 likes - added 8 years ago

Learn how to decompose a fraction into tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fractions-with
06:06 Popular
Equivalent Fractions And Different Wholes | Fractions | 4th Grade | Khan Academy

811 views / 0 likes - added 8 years ago

Learn how two fractions are equivalent only if they refer to the same whole. For example, 1/2 of a small circle is not the same as 1/2 of a big circle. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-
03:55
The weird chemistry threatening priceless paintings — Speaking of Chemistry

477 views / 0 likes - added 6 years ago

Subscribe! http://bit.ly/ACSReactions Did you know that thousands of precious paintings around the world are generating soap beneath their surfaces? Art conservators struggle with microscopic eruptions in masterpieces http://cen.acs.org/articles/94/i21/Ar
02:19 Popular
How To Determine The Domain Of A Modeling Function (example With A Function) | Khan Academy

1,266 views / 0 likes - added 8 years ago

Sal determines the domain of a function that models the height of a plant over time. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra/algebra-functions/determining-the-domain-of-a-function/e/interpreting
13:33 Popular
The Mole 6 - Converting Mass of a Compound to Atoms and Ions

765 views / 0 likes - added 5 years ago

Craig Beals explains the final step in understanding how to use the mole in chemistry. Converting mass of a compound to atoms and ions requires knowledge and practice of all the other steps of the mole and becomes one of the main components in stoichiomet
02:06 Popular
Relating Addition And Subtraction | Basic Addition And Subtraction | Early Math | Khan Academy

950 views / 0 likes - added 8 years ago

See the relationship between 2+3=5, 5-2=3, and 5-3=2. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basics/cc-early-math-add-subtract-10/e/relate-addition-and-subtraction?utm_
02:15 Popular
Addition And Subtraction Within 10 | Basic Addition And Subtraction | Early Math | Khan Academy

1,931 views / 0 likes - added 8 years ago

See how to solve a bunch of addition and subtraction problems with small numbers. All numbers in this video are 10 or less. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-add-sub-basic
04:39
How to make an Anti gravity suspension structure? - is Tensegrity structure.

485 views / 0 likes - added 3 years ago

Like and Subscribe. Answer to your question: https://youtu.be/gSBuc2VZD3k (explained)
09:36 Popular
Negative Numbers Introduction | Negative Numbers And Absolute Value | Pre-Algebra | Khan Academy

2,222 views / 0 likes - added 8 years ago

Mysterious negative numbers! What ARE they? They are numbers less than zero. If you understand the nature of below zero temperatures, you can understand negative numbers. We'll help. Practice this lesson yourself on KhanAcademy.org right now: https://www.
04:00 Popular
Finding Factors And Multiples | Factors And Multiples | Pre-Algebra | Khan Academy

1,646 views / 1 likes - added 8 years ago

To find the factors of a number means to find all the whole numbers that the number in question is divisible by. Can you help us find the factors in this example? Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math
02:58 Popular
What Are Atoms and Isotopes?

724 views / 0 likes - added 3 years ago

Most people recognize that atoms are the fundamental building blocks of all matter around us. An atom itself is composed of protons, neutrons and electrons. The simplest atom is the hydrogen atom because it consists of only one proton and one electron. If
09:58
Overview Of Protein Structure

526 views / 0 likes - added 8 years ago

Primary, secondary, tertiary and quaternary protein structure. Thinking about how the different factors impacting a protein's structure. Beta pleated sheets. Alpha helices.
03:34 Popular
How Atoms Bond - George Zaidan And Charles Morton

779 views / 0 likes - added 8 years ago

View full lesson: http://ed.ted.com/lessons/how-atoms-bond-george-zaidan-and-charles-morton Atoms can (and do) bond constantly; it's how they form molecules. Sometimes, in an atomic tug-of-war, one atom pulls electrons from another, forming an ionic bond.
10:12 Popular
The Nucleus: Crash Course Chemistry #1

922 views / 1 likes - added 9 years ago

Hank does his best to convince us that chemistry is not torture, but is instead the amazing and beautiful science of stuff. Chemistry can tell us how three tiny particles - the proton, neutron and electron - come together in trillions of combinations to f
09:57
Kinetics: Chemistry's Demolition Derby - Crash Course Chemistry #32

639 views / 0 likes - added 9 years ago

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

>> View noble gas configuration electronic structure atoms chemistry khan academy web videos