| 1) | 510 + 95 = | 2) | 625 + 568 = | 3) | 100 − 453 = |
| 4) | -427 − 795 = | 5) | 884 + 939 = | 6) | 995 + 121 = |
| 1) | 510 + 95 = 605 | 2) | 625 + 568 = 1193 | 3) | 100 − 453 = -353 |
| 4) | -427 − 795 = -1222 | 5) | 884 + 939 = 1823 | 6) | 995 + 121 = 1116 |