Rounding Decimals and Whole Numbers

Front

What is rounding?

Back

Rounding is the process of adjusting the digits of a number to make it simpler or to fit a certain level of precision, often to the nearest whole number or decimal place.

Front

Why do we round numbers?

Back

We round numbers to make them easier to work with, to simplify calculations, or to express them to a desired level of precision.

Front

How do you round a whole number?

Back

To round a whole number, look at the digit to the right of the desired rounding place. If it's 5 or more, increase the rounding place by 1 and change all digits to the right to zero. If it's less than 5, keep the rounding place the same and change all digits to the right to zero.

Front

How do you round a decimal number?

Back

To round a decimal number, look at the digit to the right of the desired decimal place. If it's 5 or more, increase the digit in the rounding place by 1 and remove all digits to the right. If it's less than 5, keep the digit in the rounding place the same and remove all digits to the right.

Front

What is the rule for rounding numbers ending in 5?

Back

When rounding numbers ending in 5, the standard rule is to round up to the next higher number.