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Math CC7/8 – Be Prepared On Desk: Learning Log: 1. Pencil 1. HW: p. 68, #14, 15, 2. *Math #19-24 (directions!), #25 Journal 2. AN Quiz – Friday 10/14 3. Learning Log *Get ready for a Warm Up in your journal! Turn in: SD Test with Signature!! Tasks for Today • Warm Up • Lesson 3.3 – Division of Rational Numbers – Day 1 • Begin HW? Warm Up Copy and solve the following problems in your journal… 1) 2) 3) 4) 5) 6) -0.9 ÷ 1.44 =-0.625 7 (-6) = -42 -4 (-9) = 36 3.4 (-0.2) = -0.68 -3/4 (-1/3) = 1/4 -1 ½ (5) = -7 1/2 2 (-0.25) = -0.5 Multiplying Integers - Rules Positive x Positive = Positive Positive x Negative = Negative Negative x Positive = Negative Negative x Negative = Positive p. 60 Skip A & B • Divide the absolute values of the two numbers (ignore the signs), then decide which sign to use. • If the signs are the same, the quotient will be positive. • If the signs are different the quotient will be negative. Dividing Integers - Rules Positive ÷ Positive = Positive Positive ÷ Negative = Negative Negative ÷ Positive = Negative Negative ÷ Negative = Positive No! Division in NOT commutative. When you change the order, you get quotients that are multiplicative inverses of one another! Adding zero to ANY rational number does NOT change the value of the number. Yes! The multiplicative identity is 1. The sum of a number and its opposite (additive inverse) is always zero! Zero is its own additive inverse. Each nonzero rational number has a multiplicative inverse. It is the reciprocal of the number. A number times its multiplicative inverse is equal to one! Begin G?