| 1) | 751 + 904 = | 2) | 905 + 278 = | 3) | -773 + 318 = |
| 4) | -884 − 630 = | 5) | 796 + 451 = | 6) | 891 − 475 = |
| 1) | 751 + 904 = 1655 | 2) | 905 + 278 = 1183 | 3) | -773 + 318 = -455 |
| 4) | -884 − 630 = -1514 | 5) | 796 + 451 = 1247 | 6) | 891 − 475 = 416 |