1. Algebra
Library
Chapter 1: Pre-Algebra Concepts
Lesson 3.1: Addition and Subtraction Expressions
Practice
Simplify the expression.
1. 1 + (–3) + 8 + (–9) 11. 15 + (–5) – 19 + 12
2. 10 + (–1) + 12 + (–4) 12. 23 + (–8) – 9 + 14
3. 2 + (–5) + 7 + (–21) 13. 16 + (–4) – 18 + 3
4. 13 + (–8) + 9 + (–29) 14. 27 + (–9) – 10 + 8
5. 1 + (–4) + 13 + (–8) 15. 16 + (–8) – 9 + 1
6. 12 – 4 – (–6) – 20 16. 35 – (–7) + 35 – 6
7. 13 – 6 – (–9) – 2 17. 42 – (–8) + 23 – 9
8. –4 – 7 – (–10) – 10 18. 55 – (–9) + 17 – 3
9. 12 – 4 – (–6) – 20 19. 63 – (–15) + 20 – 15
10. 17 – 7 – (–9) – 30 20. 86 – (–34) + 35 – 5
Simplify the expression. Perform multiplication and division before
addition and subtraction.
21. 5 + 2•5 – 4(–3) + 10 ÷ 2 25. 22 – 12 ÷ 6 + 4(–3) + 9 • 3
22. 6 + 2•8 – 7(–6) + 18 ÷ 3 26. 35 – 15 ÷ 3 + 5(–2) + 4 • 2
23. 12 + 4•9 – 4(–9) + 14 ÷ 2 27. 25 – 14 ÷ 7 + 6(–2) + 3 • 7
24. 19 + 2•6 – 3(–2) + 9 ÷ 3 28. 12 – 44 ÷ 11 + 7(–9) + 8 • 4
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2. Algebra
Library
Chapter 1: Pre-Algebra Concepts
Lesson 3.1: Addition and Subtraction Expressions
Answer Key
1. –3 15. 0
2. 17 16. 71
3. –17 17. 64
4. –15 18. 78
5. 2 19. 83
6. –6 20. 150
7. 14 21. 32
8. –11 22. 70
9. –6 23. 91
10. –11 24. 40
11. 3 25. 35
12. 20 26. 28
13. –3 27. 32
14. 16 28. –23
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