Module 5 · Place value and decimals · Lesson 24 of 39
Rounding
Round to any place, left or right of the decimal point.
In this lesson · about 10 minutes
- Round to the nearest tenth, hundredth or thousandth
- Round to the nearest ten, hundred or thousand
To round, find the place you're rounding to and look at the next digit to its right. If that digit is 5 or more, round up; if it's 4 or less, round down. Then drop everything after the place (or fill with zeros left of the point).
3.14159 to the nearest hundredth: the hundredths digit is 4 and the next digit is 1, so round down: 3.14.
130,874.62 to the nearest hundred: the hundreds digit is 8 and the next digit is 7, so round up: 130,900.
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