This document contains a lesson on multiplying integers. It provides examples of multiplying different combinations of positive and negative integers. It also establishes two rules for multiplying integers: 1) if the signs are the same, the product is positive, and 2) if the signs are different, the product is negative. Several practice problems are provided for students to evaluate expressions involving multiplying integers.

1. Name ______________________________ Date __________________
Mrs. Labuski / Mrs. Rooney Period _____ Lesson 9-6 Multiplying Integers
Numbers 3•2 -3 • 2 3 • (-2) -3 • (-2)
3 groups of the opposite of the opposite of
Words 3 groups of -2
2 3 groups of 2 3 groups of 2
Addition 2+2+2 -(2 + 2 + 2) (-2) + (-2) + (-2) -[(-2) + (-2) + (-2)]
Product 6 -6 -6 6
Rules:
If the signs are the same, the product is positive
If the signs are different, the product is negative
1. 7 • 8 __56___________ 2. 5 • (-9) ___-45________3. -4 • 12___-48_______
4. -6 • (-11) __66_______ 5. -3 • 8 __-24_________ 6. -12 • (-18) _216_____
7. 5 • (-7) __-35_______ 8. -4 • 3 _-12________ 9. -8 • (-2) __16_______
10. -9 • (-1) __9_______ 11. 5 • (-6) ___-30______ 12. -10 • (-4) __40______
13. 6 • (-8) ___-48_____ 14. 0 • (-3) __0_____ 15. 7 • (-9) __-63______
Evaluate 4n for each value of n.
16. n =- 2 _________ 17. n = (-4) _________ 18. n = (-7)_________
4n 4n 4n
4 • -2 4 • -4 4 • -7
-8 -16 -28

2. 19. n = (-3) _________ 20. n = 11 _________ 21. n = 0_________
4n 4n 4n
4 • -3 4 • 11 4•0
-12 44 0
Evaluate -3n for each value of n.
22. n = -5 _________ 23. n = 0 _________ 24. n = 6_________
-3n -3n -3n
-3 • -5 -3 • 0 -3 • 6
15 0 -18
25. n = (-8) _________ 26. n = 7 _________ 27. n = (-1)_______
-3n -3n -3n
-3 • -8 -3 • 7 -3 • -1
24 -21 3
Name ______________________________ Date __________________
Mrs. Labuski / Mrs. Rooney Period _____ Lesson 9-6 Multiplying Integers
Numbers 3•2 -3 • 2 3 • (-2) -3 • (-2)
Words
Addition
Product
Rules:
If the signs are the __________, the product is ____________

3. If the signs are __________, the product is __________
1. 7 • 8 _____________ 2. 5 • (-9) ___________ 3. -4 • 12____________
4. -6 • (-11) _________ 5. -3 • 8 ____________ 6. -12 • (-18) _________
7. 5 • (-7) _________ 8. -4 • 3 _________ 9. -8 • (-2) _________
10. -9 • (-1) _________ 11. 5 • (-6) _________ 12. -10 • (-4) _________
13. 6 • (-8) _________ 14. 0 • (-3) _________ 15. 7 • (-9) _________
Evaluate 4n for each value of n.
16. n = 2 _________ 17. n = (-4) _________ 18. n = (-7)_________
19. n = (-3) _________ 20. n = 11 _________ 21. n = 0_________
Evaluate -3n for each value of n.
22. n = -5 _________ 23. n = 0 _________ 24. n= 6_________
25. n =(-8) _________ 26. n = 7 _________ 27. n = (-1)_______