Rounding Decimals

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What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, while keeping its value close to what it was.

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

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What does it mean to round to the nearest dollar?

Back

Rounding to the nearest dollar means adjusting a decimal number to the closest whole number.

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CCSS.5.NBT.A.4

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How do you round a number ending in 0.5 or higher?

Back

If a number ends in 0.5 or higher, you round up to the next whole number.

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CCSS.5.NBT.A.4

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How do you round a number ending in less than 0.5?

Back

If a number ends in less than 0.5, you round down to the previous whole number.

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

Front

Round $14.09 to the nearest dollar.

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$14.00

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CCSS.5.NBT.A.4

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Round $15.52 to the nearest dollar.

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$16.00

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CCSS.5.NBT.A.4

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Round $34.57 to the nearest dollar.

Back

$35.00

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CCSS.5.NBT.A.4

Front

What is rounding to the nearest tenth?

Back

Rounding to the nearest tenth means adjusting a decimal number to one decimal place.

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CCSS.5.NBT.A.4

Front

Round 56.789 to the nearest tenth.

Back

56.8

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CCSS.5.NBT.A.4

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What is rounding to the nearest hundredth?

Back

Rounding to the nearest hundredth means adjusting a decimal number to two decimal places.

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CCSS.5.NBT.A.4