Algebra 1 08/23/16 EQ: How do I multiply and divide real numbers

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Objective: Learn to multiply and divide integers.

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Presentation transcript:

Algebra 1 08/23/16 EQ: How do I multiply and divide real numbers Algebra 1 08/23/16 EQ: How do I multiply and divide real numbers? HW: pg. 23 #1-37 odd

Multiplying/Dividing Same Signs 3 x 9 = -7 x -5 = 28 ÷ 2 = 25 ÷ -5 = Rule: If two numbers have the same sign, the answer will be ___________

Multiplying/Dividing Different Signs 6 x -8 = -7 x 2 = 18 ÷ -2 = -40 ÷ 5 = Rule: If two numbers have different signs, the answer will be ___________

If you forget the rule…

Practice -5 x 9 = -18 ÷ -3 = -6 x -4 = 30 ÷ -6 = -1 x -7 = -9 ÷ -1 =

Multiplying Fractions 5 7 x 3 2 = 9 4 x 2 6 = 10 3 x 6 5 = Rule: When multiplying fractions, we ___________ _______ and we ____________ if possible

Dividing Fractions Keep Change Change 5 7 ÷ 10 3 = 6 4 ÷ 2 9 = 2 3 ÷ 6 12 = Rule: When dividing fractions, we ___________ _______ ________ by doing ________and we _________ if possible.