Multiply and Divide Integers

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Presentation transcript:

Multiply and Divide Integers

We will multiply or divide integers like we do whole numbers We will multiply or divide integers like we do whole numbers. We just need to watch for the signs. These numbers are both positive Multiplication is repeated addition Represents the number repeated 5 X 3 5 Represents how many times to repeat 5 + 5 + = 15

- - - 5 X 3 = -5 + -5 + -5 = -15 5 X 3 = -5 5 + + -5 5 + + -5 5 = -15 ─ 5 X 3 = -5 + -5 + -5 = -15 Ex 1) Ex 2) 5 X 3 = -5 5 + + -5 5 + + -5 5 ─ = -15 Opposite - - - 15 Ex 3) ─ 5 X 3 ─ = 5 + 5 + 5 = Opposite

- - Rules + Positive times Positive Positive Negative times Negative Positive times Negative Negative

9 X -3 = -27 -6 X 4 = -24 -6 X - 12 = 72 -3 X -6 X 2 = 36 -4 X -5 X -6 Ex 4) 9 X -3 = -27 -6 X 4 = -24 Ex 5) -6 X - 12 = 72 Ex 6) -3 X -6 X 2 = 36 Ex 7) -4 X -5 X -6 = -120 Ex 8)

Division uses same rules Ex 9) 15 ÷ 3 = 5 -60 ÷ 5 = -12 Ex 10) 96 ÷ - 3 = - 32 Ex 11) - 720 = - 90 Ex 12) 8 -2 + -12 = 2 Ex 13) -7

Essential Question Explain how to multiply more than two integers?

Notes start here

Multiply and Divide Integers Date _____________ Multiply and Divide Integers

We will multiply or divide integers like we do whole numbers We will multiply or divide integers like we do whole numbers. We just need to watch for the signs. Multiplication __ _________ ___________ These numbers are both positive Represents the number _________ 5 X 3 Represents how many _______ ___ ________

Ex 1) Ex 2) Ex 3)

Rules Positive times Positive Negative times Negative Positive times Negative

Ex 4) Ex 5) Ex 6) Ex 7) Ex 8)

Division uses same rules Ex 9) Ex 10) Ex 11) Ex 12) Ex 13)

Essential Question Explain how to multiply more than two integers?