Mastering Multiplication and Division of Integers

This video tutorial provides a recap of multiplying and dividing integers, emphasizing the rules for determining the sign of the result based on the signs of the integers involved. It explains that if the integers have the same sign, the result is positive, and if they have different signs, the result is negative. The tutorial includes several examples to illustrate these rules and concludes with a summary of the key points.

What is the outcome when multiplying or dividing two integers with the same signs?

• Undefined

• Zero

• Positive

• Negative

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What should you do first when multiplying or dividing integers?

• Add the integers

• Change the signs

• Subtract the integers

• Ignore the signs

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CCSS.7.NS.A.2B

What is the result of dividing 20 by -2?

• -20

• 20

• -10

• 10

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

If you multiply -7 by 3, what is the result?

• 10

• -21

• -10

• 21

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CCSS.7.NS.A.2B

What is the result of multiplying 4 by -6?

• 10

• -24

• 24

• -10

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of dividing -40 by -8?

• -8

• 5

• 8

• -5

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of multiplying -4 by -2?

• 8

• 6

• -6

• -8

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of dividing 22 by 11?

• -2

• -11

• 11

• 2

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of multiplying 2 by -15?

• 30

• -15

• -30

• 15

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B

What is the result of multiplying 4 by -2 and then by -3?

• -24

• 24

• -12

• 12

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CCSS.7.NS.A.2A

CCSS.7.NS.A.2B