Rounding to the nearest 10 and 100

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified value, such as the nearest ten or hundred.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round a number to the nearest ten?

Back

Look at the digit in the ones place. If it is 5 or more, round up. If it is 4 or less, round down.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is 45 rounded to the nearest ten?

Back

50

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Front

What is 67 rounded to the nearest ten?

Back

70

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round a number to the nearest hundred?

Back

Look at the digit in the tens place. If it is 5 or more, round up. If it is 4 or less, round down.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is 250 rounded to the nearest hundred?

Back

300

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CCSS.3.NBT.A.1

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Front

What is 349 rounded to the nearest hundred?

Back

300

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Front

What is 850 rounded to the nearest hundred?

Back

900

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CCSS.3.NBT.A.1

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Front

What is 99 rounded to the nearest hundred?

Back

100

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

If a number is exactly halfway between two rounding points, which way do you round?

Back

You round up to the next higher number.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3