Negative x Negative = Positive Positive x Positive = Positive Negative x Positive = Negative Positive x Negative = Negative

When multiplying two numbers, if the signs are the same the answers positive.

If the signs are different, the answer is negative.

To remember whether your answer will be positive or negative when MULTIPLYING or DIVIDING, we’ll use:

When multiplyingIntegers, cover the Two signs you are using

Ex.: 5 (-3)

What sign is left uncovered?

Negative, - That is the sign of The answer= -15

Choral Response

You Try!

(– 10)(3) = 2 – 5 =

– 11 – 6 =

– 30

– 10

66

Division

Good News: It’s not any different!

Ex.: -48 (-4)= + 12

Equal means it works both ways!

8168

16

(14) (-2)

Answer: -7

(-36) (- 3)

5 (-7) (-6)

)3(0

= 12

= 210

= 0

You Try:

Evaluating Variable Expressions

1.Evaluate 6a when a = – 3 6a = 6 (– 3) Answer = -18

2.Evaluate xyz when x = 2, y = – 4 and z = 6xyz = 2(– 4)(6)Answer = – 48

Practice:Multiplying and

Dividing Integers