| 1) | 871 + 846 = | 2) | 590 + 926 = | 3) | 492 + 171 = |
| 4) | 691 + 368 = | 5) | 911 + 165 = | 6) | -921 + 439 = |
| 1) | 871 + 846 = 1717 | 2) | 590 + 926 = 1516 | 3) | 492 + 171 = 663 |
| 4) | 691 + 368 = 1059 | 5) | 911 + 165 = 1076 | 6) | -921 + 439 = -482 |