| Name __________________________ | Free-Ed.Net |
Date _________________ |
Pre-Algebra at Free-Ed.Net |
Section: Adding Signed Integers |
Complete the addition
| 1. ( +4) + ( + 11) = | 2. ( +14) + ( + 10) = | 3. ( +5) + ( + 4) = | 4. ( +12) + ( + 5) = |
| 5. ( –12 ) + ( –9) = | 6. ( –9 ) + ( –4) = | 7. ( –10 ) + ( –14) = | 8. ( –2 ) + ( –9) = |
| 9. ( +15) + ( –9) = | 10. ( +17) + ( –3) = | 11. ( +17) + ( –11) = | 12. ( +20) + ( –19) = |
| 13. ( –11) + ( +15) = | 14. ( –18) + ( +18) = | 15. ( –6) + ( +10) = | 16. ( –5) + ( +13) = |
| 17. ( –17) + ( +5) = | 18. ( –17) + ( +5) = | 19. ( –9) + ( +5) = | 20. ( –20) + ( +4) = |
| 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. ( +4) + ( + 11) = +15 |
2. ( +14) + ( + 10) = +24 |
3. ( +5) + ( + 4) = +9 |
4. ( +12) + ( + 5) = +17 |
| 5. ( –12 ) + ( –9) = –21 |
6. ( –9 ) + ( –4) = –13 |
7. ( –10 ) + ( –14) = –24 |
8. ( –2 ) + ( –9) = –11 |
| 9. ( +15) + ( –9) = +6 |
10. ( +17) + ( –3) = +14 |
11. ( +17) + ( –11) = +6 |
12. ( +20) + ( –19) = +1 |
| 13. ( –11) + ( +15) = +4 |
14. ( –18) + ( +18) = +0 |
15. ( –6) + ( +10) = +4 |
16. ( –5) + ( +13) = +8 |
| 17. ( –17) + ( +5) = –12 |
18. ( –17) + ( +5) = –12 |
19. ( –9) + ( +5) = –4 |
20. ( –20) + ( +4) = –16 |
| 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 |