| 1) | 708 − 697 = | 2) | 56 − 393 = | 3) | -497 + 291 = |
| 4) | 167 + 664 = | 5) | 552 + 599 = | 6) | -234 + 668 = |
| 1) | 708 − 697 = 11 | 2) | 56 − 393 = -337 | 3) | -497 + 291 = -206 |
| 4) | 167 + 664 = 831 | 5) | 552 + 599 = 1151 | 6) | -234 + 668 = 434 |