1. Warm Up
Multiply or divide.
1. 5(8) 40
2. 6(12) 72 36 9 49 7 3. 4 4. 7
192 16 12
5. 18(7)
126 6.

3. Example 1: Multiplying and Dividing Integers
Multiply or divide.
–18 2
A. –6(4) C.
–24 –9
–25 –5
B. –8(–5) D. 40 5

4. Check It Out: Example 1
Multiply or divide.
–24 3
A. 5(–2) C.
–10 –8
–12 –2
B. –3(–2) D. 6 6

5. Example 2: Using the Order of Operations with Integers
Simplify.
A. 3(–6 – 12)
C. –2(14 – 5)
3(–18)
–2(9)
–54
–18
B. –5(–5 + 2)
–5(–3) 15

6. Check It Out: Example 2
Simplify.
A. 2(1 – 8)
C. –3(6 – 9)
2(–7)
–3(–3)
–14 9
B. 4(–3 – 8)
4(–11)
–44

7. Example 3: Sports Application
A golfer plays 5 holes. On 3 holes, he is 4 strokes over par. On 2 holes, he is 1 stroke under par. Each score over par can be represented by a positive integer, and each score under par can be represented by a negative integer. Find the total score relative to par.
3(4) + 2(–1)
Add the losses to the gains.
12 + (–2)
Multiply. 10
Add.
The total score is 10 strokes over par.

8. Check It Out: Example 3
A golfer plays 9 holes. On 3 holes, he is 3 strokes over par. On 4 holes, he is 3 stroke under par. Each score over par can be represented by a positive integer, and each score under par can be represented by a negative integer. Find the total score relative to par.
3(3) + 4(–3)
Add the losses to the gains.
9 + (–12)
Multiply. –3
Add.
The total score is 3 strokes under par.

9. 1. –8(4) –32 2. 6 3. –2(13 – 4) –18 4. 6(–5 – 3) –48 $40 Lesson Quiz
Multiply or divide.
1. –8(4)
–32 2.
–12(5)
–10 6
Simplify.
3. –2(13 – 4)
–18
4. 6(–5 – 3)
–48
5. Evin completes 11 transactions in his bank account. In 6 transactions, he withdraws $10. In 5 transactions, he deposits $20. Find the total net change in dollars.
$40