1. Warm-up: Countdown to testing Week #5
Homework: Page 32 # 1-20 all, #22-35 all, #43-49 all

2. Step One: Perform the operation ignoring the signs.
Step Two:

3. Example 1: I Do
Multiply or divide.
A. –6(4)
Signs are different.
–24
Answer is negative.
B. –8(–5)
Signs are the same. 40
Answer is positive.

4. Example 2: You Do
Multiply or divide.
–18 2 C.
Signs are different. –9
Answer is negative.
–25 –5 D.
Signs are the same. 5
Answer is positive.

5. Example 3: I Do
Simplify.
A. 3(–6 – 12)
Subtract inside the parentheses.
3(–18)
Think: The signs are different.
–54
The answer is negative.
B. –5(–5 + 2)
Subtract inside the parentheses.
–5(–3)
Think: The signs are the same. 15
The answer is positive.

6. Example 4: You Do
Simplify.
A. 2(1 – 8)
Subtract inside the parentheses.
2(–7)
Think: The signs are different.
–14
The answer is negative.
B. 4(–3 – 8)
Subtract inside the parentheses.
4(–11)
Think: The signs are different.
–44
The answer is negative.

7. Warm-up:
) 50
2) -8(9) = 5) (-3)(-12)
3) ) (7)(-6) 3
Homework: Worksheet.

8. Page 34 #1-3 all #7-23 all 24) Name the property: 3 X 4 X 5 = 3 X 5 X 4 25) Name the property: (3 + 4) + 5 = (3 + 5) ) Name the property: (3 + 4) + 5 = 3 + (4 + 5)