Multiplying and Dividing Integers

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Multiplying and Dividing Integers

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Presentation transcript:

Multiplying and Dividing Integers A REVIEW OF THE RULES

Rules When multiplying and dividing integers there are two rules: 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

Rules continued… Rule 2: When multiplying or dividing integers whose signs are DIFFERENT, the answer will always be NEGATIVE. Positive x negative = negative Negative x positive = negative +8 x –4 = -32 -5 x +7 = -35

Let’s Practice! What sign would the answer have in front of the integer??? -5 x -6 = ???

POSITIVE!

What sign will be in front of the answer?? How about… -6 x 8 = ??? What sign will be in front of the answer??

NEGATIVE!

Try this one! What sign will be in front of the answer??? -72÷ +9 = ???

NEGATIVE!

Let’s TRY SOLVING some problems: -6 x –4 =

24

4 x 11 =

44

45 ÷ -5 =

-9

-70 ÷ 7 =

-10

8 x –11 =

-88

Different signs = a negative So Remember… When multiplying and dividing integers: Same signs = a positive Different signs = a negative