Rounding Numbers: Key Concepts and Examples

What is the basic rule for rounding numbers?

• If it's 7 or more, round up; if it's 6 or less, round down.

• If it's 4 or more, round up; if it's 3 or less, round down.

• If it's 5 or more, round up; if it's 4 or less, round down.

• If it's 6 or more, round up; if it's 5 or less, round down.

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Where would the number 44 be placed on a number line from 0 to 50?

• Between 30 and 40

• Between 10 and 20

• Between 40 and 50

• Between 20 and 30

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Why does the number 45 round up to 50?

• Because it is a multiple of 5

• Because it is exactly in the middle

• Because it starts a new set of numbers

• Because it is closer to 50 than 40

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What are the benchmark numbers for rounding 44?

• 30 and 40

• 40 and 50

• 20 and 30

• 50 and 60

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What is the midpoint between 40 and 50?

• 43

• 42

• 45

• 44

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What are the two thousands that 7329 falls between?

• 9000 and 10000

• 6000 and 7000

• 7000 and 8000

• 8000 and 9000

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CCSS.3.NBT.A.1

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What is the midpoint between 7000 and 8000?

• 7400

• 7700

• 7500

• 7600

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CCSS.HSN.CN.B.6

To which thousand does 7329 round?

• 7000

• 7100

• 7200

• 7300

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CCSS.3.NBT.A.1

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What are the benchmark numbers for rounding 7329 to the nearest hundred?

• 7200 and 7300

• 7300 and 7400

• 7400 and 7500

• 7500 and 7600

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What is the midpoint between 7300 and 7400?

• 7370

• 7380

• 7360

• 7350

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CCSS.HSN.CN.B.6