6.15 is the same as 6 + 15/100, so it is a mixed fraction : 6 15/100
You can also express it as an improper fraction 615/100 or 123/20
I agree with debbie. I learned about this recently.6.15.The first decimal place is the tenths place the second decimal place is the hunderedths so 6.15 equals 6 15/ 100.