1. Warm Up 1. -12 + 9 2. -3 – (-5) 3. 1.5 – 8.5 4. -1 – 5 5. 7 – 2

2. Multiplying & Dividing Real Numbers Section 1.6

3. Objective  TSWBAT multiply and divide real numbers with the same sign and different signs.

4.  Multiplicative Inverse  Reciprocal

5. Example 1  Simplify each square root expression. A. Answer: -7 B. Answer: C. Answer: 8 D. Answer:

6. Multiplying/Dividing Multiply/DivideSign + + - + - +- + --

7. Dividing Involving 0 DivisionAnswer 0 Undefined

8. Example 2  Find each product. A. 9(-7) Answer: -72 B.32(0.5) Answer: 16 C. Answer: D. Answer: 25

9.  -6 ÷ 3  10 ÷ (-2)  -25 ÷ (-5)  42 ÷ 7  0 ÷ 35  -67 ÷ 0

10. Example 4  The elevation of a hot air balloon changes by -3750 ft in 5 min after opening the parachute. What is the change in the hot air balloon's elevation each minute? Answer: -750 ft each min.

11. Example 5  What is the value of when and ? Answer:

12.  Pg. 42-44 # 8-43, 70-75