| 1) | 647 + 746 = | 2) | -697 + 856 = | 3) | 77 + 167 = |
| 4) | -411 − 503 = | 5) | -816 + 428 = | 6) | 404 + 405 = |
| 1) | 647 + 746 = 1393 | 2) | -697 + 856 = 159 | 3) | 77 + 167 = 244 |
| 4) | -411 − 503 = -914 | 5) | -816 + 428 = -388 | 6) | 404 + 405 = 809 |