1. 20 + 5 = 25
2. 10 x 5 = 50
3. Okay, this one is pretty complicated, anyways if we go to the nearest hundredths place it’s 5.20. (Yes, it ends in the tenths place, but I multiplied the hundredths place decimals too and 5.2 was the closest to 27, it was 27.04 when I multiplied it. I didn’t use a calculator until I decided to go to the thousandths place)
4. 40.