MODELS FOR Multiplying INTEGERS: Math-7 NOTES DATE: __/_/_____ What: Multiplying and dividing integers Why: To establish the rules for multiplying.

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MODELS FOR Multiplying INTEGERS: Math-7 NOTES DATE: ______/_______/_______ What: Multiplying and dividing integers Why: To establish the rules for multiplying and dividing integers. What: Multiplying and dividing integers Why: To establish the rules for multiplying and dividing integers. NAME: 3(-3) = -9 2(____) = -10 Three groups of negative 3 is -9! Two groups of negative 5 is -10! Rules for multiplying And dividing integers: SAME SIGNS ________ _ ANSWER 3 ● 4 = ● -4 = 12 DIFFERE NT SIGNS ________ _ ANSWER -3 ● 4 = ● -4 = -12 MODEL FOR DIVIDING INTEGERS: ÷ _____ = -3 What other problem is this a model of ??? 6 ÷ 3 = 2 -6 ÷ -3 = 2 -6 ÷ 3 = -2 6 ÷ -3 = -2

Multiplication/ division memory “tricks”: Evaluate the following examples: 1. 8(-6) =2. -12(-4) = ∙ 7 = (-9) = ÷ - 4 = / -7 = / -5 = / 9 = 9. 21(-8) = / 8 = (3.5) = 12) - 35 ∙ -15 = Make a Tic-Tac-Toe Board with “P’s” in the diagonal and “N’s” in all the other spaces. Read board in any direction— up, down, left, right, diagonal– from the outside in, and it will give you the right answer. Smiley Face Method: Smile = positive answer Frown= negative answer We like to sleep! We don’t like to be hit in the eye! P= positive N= negative

Math-7 PRACTICE DATE: ______/_______/_______ NAME:__________________________ “multiply/ divide INTEGERS” Multiplication:Multiplication:

Division:Division: