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Multiply and divide integers
This document discusses the rules for multiplying and dividing integers. It states that when multiplying or dividing integers with the same sign, the answer is positive, but when the signs are different, the answer is negative. It provides examples of multiplying and dividing positive and negative integers. It then has practice problems for the reader to solve with the guidance to determine if the answer should be positive or negative based on the signs of the integers.
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Multiply and divide integers
- 1. Multiplying and Dividing Integers By:Mrs. Young & Andrea Bonde
- 2. Rules • When multiplyingand 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
- 3. Rules continued… • Rule2: – 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
- 4. Let’s Practice! What signwould the answer have in front of the integer??? -5 x -7 = ???
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- 6. How about… -6 x9 = ??? What sign will be in front of the answer??
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- 8. Try this one! Whatsign will be in front of the answer??? -81 ÷ +9 = ???
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- 20. Remember… • When multiplyingand dividing integers: Same signs = a positive Different signs = a negative
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