Rounding whole numbers

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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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

Front

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.4.NBT.A.3

CCSS.3.NBT.A.1

Front

What does it mean to round to the nearest hundred?

Back

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

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CCSS.4.NBT.A.3

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Front

When rounding, what digit do you look at to decide whether to round up or down?

Back

You look at the digit to the right of the place value you are rounding to. If it's 5 or more, you round up; if it's less than 5, you round down.

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

Front

Round 37 to the nearest ten.

Back

40

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CCSS.4.NBT.A.3

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Front

Round 48 to the nearest ten.

Back

50

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CCSS.4.NBT.A.3

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Front

Round 293 to the nearest hundred.

Back

300

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CCSS.4.NBT.A.3

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Front

Which number can NOT be a rounded number? 30, 40, 100, 102

Back

102

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

Front

What is 35 rounded to the nearest ten?

Back

40

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

Front

If a number is 74, what is it when rounded to the nearest ten?

Back

70

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CCSS.4.NBT.A.3

CCSS.3.NBT.A.1