| Name __________________________ | Free-Ed.Net |
Date _________________ |
Pre-Algebra at Free-Ed.Net |
Section: Adding Signed Integers |
Complete the addition
| 1. ( +20) + ( + 7) = | 2. ( +3) + ( + 10) = | 3. ( +20) + ( + 18) = | 4. ( +4) + ( + 12) = |
| 5. ( –2 ) + ( –9) = | 6. ( –18 ) + ( –15) = | 7. ( –3 ) + ( –1) = | 8. ( –1 ) + ( –6) = |
| 9. ( +13) + ( –9) = | 10. ( +20) + ( –16) = | 11. ( +9) + ( –2) = | 12. ( +12) + ( –2) = |
| 13. ( –5) + ( +9) = | 14. ( –7) + ( +13) = | 15. ( –7) + ( +18) = | 16. ( –6) + ( +11) = |
| 17. ( –17) + ( +0) = | 18. ( –10) + ( +6) = | 19. ( –11) + ( +8) = | 20. ( –11) + ( +2) = |
| This document may be reproduced for educational purposes at no cost and with this message, the copyright notice, and the Free-Ed.Net logo intact.. | Copyright © 2007 David L.
Heiserman |
| Name __________________________ | Free-Ed.Net |
Date _________________ |
Pre-Algebra at Free-Ed.Net |
Answer Key |
Section: Adding Signed Integers |
Complete the addition
| 1. ( +20) + ( + 7) = +27 |
2. ( +3) + ( + 10) = +13 |
3. ( +20) + ( + 18) = +38 |
4. ( +4) + ( + 12) = +16 |
| 5. ( –2 ) + ( –9) = –11 |
6. ( –18 ) + ( –15) = –33 |
7. ( –3 ) + ( –1) = –4 |
8. ( –1 ) + ( –6) = –7 |
| 9. ( +13) + ( –9) = +4 |
10. ( +20) + ( –16) = +4 |
11. ( +9) + ( –2) = +7 |
12. ( +12) + ( –2) = +10 |
| 13. ( –5) + ( +9) = +4 |
14. ( –7) + ( +13) = +6 |
15. ( –7) + ( +18) = +11 |
16. ( –6) + ( +11) = +5 |
| 17. ( –17) + ( +0) = –17 |
18. ( –10) + ( +6) = –4 |
19. ( –11) + ( +8) = –3 |
20. ( –11) + ( +2) = –9 |
| This document may be reproduced for educational purposes at no cost and with this message, the copyright notice, and the Free-Ed.Net logo intact.. | Copyright © 2007 David L.
Heiserman |