Do Now 9/24/10 Take out HW from last night. Copy HW in your planner.

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Presentation transcript:

Do Now 9/24/10 Take out HW from last night. Copy HW in your planner. Text p. 15, #1-3 all. Text p. 40, #1-5 all. Copy HW in your planner. Text p. 45, #12-24 evens, 28-40 evens Chapter 1 Test Wednesday, September 29th. Did you hand in the POTW #2?

Homework Text p. 15, #1-3 and text p. 40, #1-5. 1) 9:00 a.m. 2) 14 seats 3) 24 orders 1) 86; 86; no mode; 24 2) 9.5; 9; 7 and 9; 6 3) 0.6; 0.5; 0.5; 0.6 4) 111.5; 111; no mode; 43 5) 183; 178; no mode; 104

Objective SWBAT multiply and divide integers

Section 1.7 “Multiplying Integers” Rule #1 The product of two integers with the same sign is always POSITIVE! 8 x 3 = 24 -8 · (-7) = 56 Rule #2 The product of two integers with different signs is always NEGATIVE! -6 x 3 = -18 8(-4) = -32

Practice 1). 8 x 9 = 2). -8 x 10 = 3). -8(7) = 4). 2(-1)(-7)² = 3). -8(7) = 4). 2(-1)(-7)² = 5). 1/3(-9/10)(-1)(-1) = 72 -80 -56 -98 -3/10

Section 1.7 “Dividing Integers” Rule #1 The quotient of two integers with the same sign is always POSITIVE! 18 ÷ 2 = 9 -24 / -4 = 6 Rule #2 The quotient of two integers with different signs is always NEGATIVE! -18 ÷ 3 = -6 24 / -8 = -3

Practice 1). -16 ÷ 4 = 2). -840 ÷ 7 = 3). -20/5 = -4 -120 -4

Critical Thinking With the person next to you, complete the critical thinking exercise below. Copy the table in your notes then answer the two questions. Expression # of Integers Product Sign of product -1(-2) -1(-2)(-3) -1(-2)(-3)(-4) -1(-2)(-3)(-4)(-5) 2 2 positive 3 -6 negative 4 24 positive 5 -120 negative 1) Write a rule for the sign of the product of more than two negative integers. 2) Suppose that the product in #1 included positive integer factors as well. Would your rule change? Explain.

“Real Number” Cards Red cards = Negative Black cards = Positive Jack = 11, Queen = 12, King =13, Ace = 1 or 14 Dealer deals each player 4 cards. The player with the highest answer gets all the cards from that round. The player with the most cards at the end of the deck wins! Multiply 1st two cards together.

NJASK7 Prep Homework Text p. 45, #12-24 evens, 28-40 evens