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Page 1: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Page 2: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Rules When multiplying and dividing integers

there are two rules:1. When multiplying or dividing integers that

have the SAME sign, the answer is POSITIVE.

Positive x positive = positive Negative x negative = positive

+7 x +12 = +84-6 x –5 = +30

Page 3: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Rules continued…Rule 2:

When multiplying or dividing integers whose signs are DIFFERENT, the answer will always be NEGATIVE.Positive x negative = negativeNegative x positive = negative

+8 x –4 = -32-5 x +7 = -35

Page 4: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Let’s Sing a Song!Multiplying Integers Song (sing to “Dead Bones” tune)

Verse 1 A negative times a negative is a, (um) positive A negative times a positive is a, (um) negativeA negative times a negative is a, (um) positive

These are the rules for signs.Verse 2

If you have the same signs, you get a positive, But if they’re different, you get a negative,

If you have the same signs, you get a positive,Yes, these are the rules for signs.

Page 5: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Let’s Practice!What sign would the answer have in front of the

integer???

-5 x -7 = ???

Page 6: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

POSITIVE!!!

Page 7: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

How about…

-6 x 9 = ???What sign will be in front of the answer??

Page 8: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

NEGATIVE!!!

Page 9: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Try this one!What sign will be in front of the answer???

-81 ÷ +9 = ???

Page 10: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

NEGATIVE!!!

Page 11: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Let’s solve some problems!

-8 x –9 =

Page 12: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

+72

Page 13: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

+4 x +12 =

Page 14: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

+48

Page 15: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

-45 ÷ +5 =

Page 16: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

-9

Page 17: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

-63 ÷ +7 =

Page 18: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

-9

Page 19: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

-8 x –11 =

Page 20: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

+88

Page 21: Rules When multiplying and dividing integers there are two rules: 1. When multiplying or dividing integers that have the SAME sign, the answer is POSITIVE

Remember…When multiplying and dividing integers:

Same signs = a positive

Different signs = a negative

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