| 1) | 651 − 182 = | 2) | 632 + 488 = | 3) | 289 − 386 = |
| 4) | -661 + 411 = | 5) | -711 + 206 = | 6) | -694 − 405 = |
| 1) | 651 − 182 = 469 | 2) | 632 + 488 = 1120 | 3) | 289 − 386 = -97 |
| 4) | -661 + 411 = -250 | 5) | -711 + 206 = -505 | 6) | -694 − 405 = -1099 |