Rounding 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.3.NBT.A.1

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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.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Round 37 to the nearest ten.

Back

40

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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.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Round 356 to the nearest hundred.

Back

400

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CCSS.4.NBT.A.3

Front

Which number rounds to 300 when rounding by hundreds? 246, 251, 351, 370

Back

251

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Front

Which number could NOT be rounded to 650 when rounding by tens? 644, 645, 646, 647

Back

644

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CCSS.3.NBT.A.1

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Front

Which of the following numbers will NOT round to 400 when rounding to the nearest hundred? 409, 445, 345, 398

Back

345

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Front

What is the rule for rounding up?

Back

If the digit to the right of the rounding place is 5 or greater, round up.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the rule for rounding down?

Back

If the digit to the right of the rounding place is less than 5, round down.

Tags

CCSS.3.NBT.A.1

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