1. Algebra
Library
Chapter 1: Pre-Algebra Concepts
Lesson 1.4: Adding Integers
Practice
Find the sum
1. 1 + 4 = ____ 7. –5 + 9 + 1 = ____
2. 1 + –3 = ____ 8. –6 + (–5) + 11 = ____
3. –4 + 5 = ____ 9. 0 + (–2) + 5 = ____
4. –6 + 6 = ____ 10. –7 + 9 + 3 = ____
5. 0 + (–7) = ____ 11. –5 + (–9) + (–6) = ____
6. 8 + (–9) = ____ 12. 1 + 8 + (–9) = ____
Find the sum using algebra tiles.
13. + = _______
14. + = _______
15. + = _______
16. + = _______
1

2. Algebra
Library
Chapter 1: Pre-Algebra Concepts
Lesson 1.4: Adding Integers
Answer Key
1. 5
2. -2
3. 1
4. 0
5. -7
6. -1
7. 5
8. 0
9. 3
10. 5
11. -20
12. 0
13. 2
14. 0
15. 3
16. -2
2