Multiplying and Dividing Integers 1.9. Rules: Multiply or divide SAME sign the product or quotient is POSITIVE Examples: 1.) -2∙ (-22)= 2.) -45÷ (-9)=

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Presentation transcript:

Multiplying and Dividing Integers 1.9

Rules: Multiply or divide SAME sign the product or quotient is POSITIVE Examples: 1.) -2∙ (-22)= 2.) -45÷ (-9)=

Rules: Multiply or divide DIFFERENT SIGNS the product or quotient is NEGATIVE Example: 1.)24÷ (-24) 2.) -4 ∙ 12

Rules: Anytime you multiply by 0 your product is 0 Examples: 1.) (0) (12) (-3) 2.) -415(0)

More than 2 terms: Count the number of negative signs. If you have a(n): – ODD amount of negative signs your answer is NEGATIVE – EVEN amount of negative signs your answer is POSITIVE

Examples: 1.) -9(-8)(-5) 2.)

Average Add up all the numbers in the set and divide by the amount that were added Example: Find the average from the group Football yardage:10,-57,9,-11

Homework TB pg 47 (12-48 even and even)