Rounding on a Number Line

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest ten, hundred, or other place value.

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What does it mean to round to the nearest ten?

Back

Rounding to the nearest ten means finding the closest multiple of ten to a given number.

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CCSS.3.NBT.A.1

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Front

What are benchmark numbers?

Back

Benchmark numbers are commonly used reference points, like 10, 20, 30, etc., that help in estimating and rounding numbers.

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If a number is 4, which two benchmark numbers is it between?

Back

0 and 10.

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CCSS.1.NBT.B.3

Front

What is 87 rounded to the nearest ten?

Back

90.

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What is 40 rounded to the nearest ten?

Back

40.

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Front

If a number is 52, which two benchmark numbers is it between?

Back

50 and 60.

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CCSS.3.NBT.A.1

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Front

What is 76 rounded to the nearest ten?

Back

80.

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CCSS.3.NBT.A.1

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Front

How do you determine if you round up or down?

Back

If the last digit is 5 or more, round up. If it's 4 or less, round down.

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CCSS.3.NBT.A.1

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Front

What is the nearest ten to 34?

Back

30.

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