Multiplying and Dividing Integers

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Presentation transcript:

Multiplying and Dividing Integers

Objective: I can use properties of operations to multiply and divide rational numbers (integers). (7.NS.A.2a)

Rules for Multiplying and Dividing Integers Rule 1: The product of a positive integer and a negative integer is a negative integer. (8)(-4)= -32 8÷(-4)= -2 Rule 2: The product of two negative integers or two positive integers is a positive integer. (-9)(-3)= 27 (-9)÷(-3)= 3

Integer Triangle

Multiplication Examples (-2) (7) = ? (3) X (-8) = ? 3) (5)(6) = ?

Remember that…… Positive ÷ Positive = Positive Negative ÷ Negative = Positive Negative ÷ Positive = Negative

Dividing Integers Examples 35÷(-7)= -25÷(-5)= 6/(-3) =

INTEGERS CARD GAME

RULES & DIRECTIONS RED—NEGATIVE K-13 Q-12 J-11 A-1 BLACK—POSITIVE Deal the deck until you and your partner have the same number of cards. Each player plays (places down) one card at a time. Ms. King will spin the wheel. The wheel decides which operation to use.