multiply and divide rational numbers

Front

What is a rational number?

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A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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CCSS.5.NBT.A.2

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How do you divide two rational numbers?

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To divide two rational numbers, multiply the first number by the reciprocal of the second number.

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CCSS.7.NS.A.2C

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What is the reciprocal of a fraction?

Back

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What happens when you divide a negative rational number by a negative rational number?

Back

The result is a positive rational number.

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CCSS.7.NS.A.2B

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What is the product of a positive rational number and a negative rational number?

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The product is a negative rational number.

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CCSS.7.NS.A.2A

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CCSS.7.NS.A.2A

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CCSS.5.NF.B.6

Front

What is the result of multiplying a rational number by 1?

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The result is the rational number itself.

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CCSS.3.OA.B.5

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CCSS.4.NF.B.4A

CCSS.4.NF.B.4B

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CCSS.7.NS.A.2A