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In this activity, we will learn how to round a decimal number to the nearest whole number.
Method
To round a decimal to the nearest whole number, check the digit in the tenths column.
If the tenths digit is 5 or more, round up.
If the tenths digit is 4 or less, round down.
Examples
19.742 is between the whole numbers 19 and 20.
The 7 tenths tells us to round up to 20.
19.742 rounds up to 20.
19.342 is between the whole numbers 19 and 20.
The 3 tenths tells us to round down to 19.
19.342 rounds down to 19.
Are you ready to start rounding some decimals?
