1. Splash Screen

2. Five-Minute Check (over Lesson 11–3) Main Idea
Key Concepts: Multiply Integers
Example 1: Multiply Integers with Different Signs
Example 2: Multiply Integers with Different Signs
Example 3: Multiply Integers with Same Signs
Example 4: Multiply Integers with Same Signs
Example 5: Use Integers to Solve a Problem
Lesson Menu

3. Multiply integers.
Main Idea/Vocabulary

4. Interactive Lab: Multiplying Positive and Negative IntegersKC

5. Multiply Integers with Different Signs
Find 9 × (–6).
9 × (–6) = –54
The integers have different signs. The product is negative.
Answer: –54
Example 1

6. Find 4 × (–7).
A. –28
B. –11
C. 11
D. 28 A B C D
Example 1

7. Multiply Integers with Different Signs
Find –5 × 7.
–5 × 7 = –35
The integers have different signs. The product is negative.
Answer: –35
Example 2

8. Find –8 × 3.
A. –24
B. –11
C. 11
D. 24 A B C D
Example 2

9. Multiply Integers with Same Signs
Find 7 × 9.
7 × 9 = 63
The integers have the same sign. The product is positive.
Answer: 63
Example 3

10. Find 5 × 4.
A. –20
B. –9
C. 9
D. 20 A B C D
Example 3

11. Multiply Integers with Same Signs
Find –4 × (–8).
–4 × (–8) = 32
The integers have the same sign. The product is positive.
Answer: 32
Example 4

12. Find –2 × (–7).
A. –14
B. –9
C. 9
D. 14 A B C D
Example 4

13. Use Integers to Solve a Problem
ELEVATORS An elevator takes passengers from the ground floor of a shopping mall down to the underground parking garage. If it travels at a rate of 5 feet per second, where will it be in relation to the ground floor after 6 seconds?
To find the location of the elevator after 6 seconds, you can multiply 6 by the amount of change per second, –5 feet.
6 × (–5) = –30
Answer: So, after 6 seconds, the elevator will be –30 feet from the ground floor or 30 feet below the shopping mall.
Example 5

14. INVESTMENTS Mr. Green has invested in a stock whose price is decreasing at a rate of $3 per day. What will be the change in the price of the stock after 5 days?
A. –$15
B. –$8
C. $8
D. $15 A B C D
Example 5

15. End of the Lesson
End of the Lesson

16. Five-Minute Check (over Lesson 11–3) Image Bank Math Tools
Multiply Positive and Negative Integers
Resources

17. Find 9 – 3. Use counters if necessary.
(over Lesson 11-3)
Find 9 – 3. Use counters if necessary.
A. –12
B. –6
C. 6
D. 12 A B C D
Five Minute Check 1

18. Find 8 – (–2). Use counters if necessary.
(over Lesson 11-3)
Find 8 – (–2). Use counters if necessary.
A. –10
B. –6
C. 6
D. 10 A B C D
Five Minute Check 2

19. Find –7 – (–12). Use counters if necessary.
(over Lesson 11-3)
Find –7 – (–12). Use counters if necessary.
A. –19
B. –5
C. 5
D. 19 A B C D
Five Minute Check 3

20. Find –10 – 8. Use counters if necessary.
(over Lesson 11-3)
Find –10 – 8. Use counters if necessary.
A. –18
B. –2
C. 2
D. 18 A B C D
Five Minute Check 4

21. (over Lesson 11-3)
Ninety-five people go into a museum, and 78 go out. How many people are still inside the museum?
A. 12 people
B. 17 people
C. 27 people
D. 38 people A B C D
Five Minute Check 5

22. (over Lesson 11-3)
When Joshua went to sleep it was 2°F outside. During the night, the temperature dropped 11°F. What was the temperature outside when he woke up?
A. –13°F
B. –9°F
C. 9°F
D. 13°F A B C D
Five Minute Check 6

23. End of Custom Shows