1. Do Now 9/22/09 Take out HW from last night. –Text p. 15, #1-3 all. Text p. 40, #1-5 all. Copy HW in your planner. Copy HW in your planner. –Text p. 45, #12-24 evens, 28-40 evens –Chapter 1 Test Friday.

2. Homework Text p. 15, #1-3 and text p. 40, #1-5. Homework Text p. 15, #1-3 and text p. 40, #1-5. 1) 9:00 a.m.1) 9:00 a.m. 2) 14 seats2) 14 seats 3) 24 orders3) 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

3. Objective SWBAT multiply and divide integersSWBAT multiply and divide integers

4. 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

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

6. 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

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

8. Critical Thinking With the person next to you, complete the critical thinking exercise below.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) 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. 2 3 4 5 2 -6 24 -120 positive negative positive negative

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

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