Question

Round this number to one decimal place: 15.21

Answer 1

Answer:

One Decimal Place Rule #1: If the last digit in 15.21 is less than 5, then remove the last digit. One Decimal Place Rule #2: If the last digit in 15.21 is 5 or more and the second to the last digit in 15.21 is less than 9, then remove the last digit and add 1 to the second to the last digit.

Answer 2

Step-by-step explanation:

Rule #1: If the last digit in 15.21 is less than 5, then remove the last digit. One Decimal Place Rule #2: If the last digit in 15.21 is 5 or more and the second to the last digit in 15.21 is less than 9, then remove the last digit and add 1 to the second to the last digit.