Compatible Numbers ÷

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What are compatible numbers?

Back

Compatible numbers are numbers that are easy to compute with mentally. They are often rounded numbers that make calculations simpler.

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How do you estimate a division problem using compatible numbers?

Back

To estimate a division problem using compatible numbers, round the dividend to a nearby number that is easy to divide by the divisor.

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CCSS.4.NBT.B.6

Front

Estimate 532 ÷ 6 using compatible numbers.

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540 ÷ 6

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CCSS.4.NBT.B.6

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Estimate 4193 ÷ 7 using compatible numbers.

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4200 ÷ 7

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CCSS.4.NBT.B.6

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Estimate 351 ÷ 9 using compatible numbers.

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360 ÷ 9

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CCSS.4.NBT.B.6

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Estimate 19 ÷ 3 using compatible numbers.

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18 ÷ 3

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CCSS.4.NBT.B.6

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Estimate 715 ÷ 9 using compatible numbers.

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720 ÷ 9

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CCSS.4.NBT.B.6

Front

What is the purpose of using compatible numbers in division?

Back

The purpose is to make mental calculations easier and quicker by using numbers that are simpler to work with.

Tags

CCSS.4.NBT.B.6

Front

Why is 540 a better compatible number for 532 than 530?

Back

540 is closer to 532 and is easier to divide by 6.

Tags

CCSS.4.NBT.B.6

Front

What is the compatible number for 4193 that makes it easier to divide by 7?

Back

4200 is the compatible number for 4193.

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CCSS.4.NBT.B.6