This document provides practice problems for simplifying multiplication expressions in algebra. It contains 21 practice problems asking the reader to simplify expressions involving multiplication of numbers and variables. It also contains an word problem asking the reader to write an expression and calculate the total amount spent buying notebooks, pens, and notepads at different prices. The answer key provides the simplified expressions or total amounts for each problem.

1. Algebra
Library
Chapter 1: Pre-Algebra Concepts
Lesson 3.2: Multiplication Expressions
Practice
Simplify the expression.
3 16 5
13. • •
1. 3(–20)(–5) 8 25 9
2. 6(–15)(–7) 4 18 5
14. • (– )•
9 25 14
3. 8(–12)(–8)
12 34 9
15. • (– )•
4. 2(–17)(–34) 17 63 10
5. 25(–67)(–4) 1
16. (8 + 4)
4
6. 7(6 + 13)
3
7. –9(5 + 7) 17. (12 – 2)
4
8. 10(12 + 28) 5
18. – (33 + 7)
8
9. 9 (7 – 3)
3
10. 15(20 –12) 19. – (24 – 6)
10
1 3 5 5
11. • • 20. (15 – 6)
3 5 12 9
2 15 7
12. • •
5 21 12
21. At the store, you purchase three notebooks that cost $1.99 each, four
pens that cost $1.25 each, and five notepads that cost $2.25 each. Write
an expression for calculating the total spent. How much was spent?
1

2. Algebra
Library
Chapter 1: Pre-Algebra Concepts
Lesson 3.2: Multiplication Expressions
Answer Key
1. 300 4
2. 630 14. –
35
3. 768 12
4. 1156 15. –
35
5. 6700 16. 3
6. 133 17. 7.5
7. –108 18. –25
8. 400 2
9. 36 19. –5
5
10. 120 20. 5
1 21. 3•1.99 + 4•1.25 + 5•2.25 =
11.
12 22.22
1
12.
6
2
13.
15
2