| 1) | -157 + 939 = | 2) | -299 − 483 = | 3) | -274 + 110 = |
| 4) | -268 + 926 = | 5) | 815 + 288 = | 6) | -705 − 352 = |
| 1) | -157 + 939 = 782 | 2) | -299 − 483 = -782 | 3) | -274 + 110 = -164 |
| 4) | -268 + 926 = 658 | 5) | 815 + 288 = 1103 | 6) | -705 − 352 = -1057 |