| 1) | 220 + 610 = | 2) | -445 + 984 = | 3) | 906 + 262 = |
| 4) | 674 + 466 = | 5) | 53 − 729 = | 6) | 447 − 701 = |
| 1) | 220 + 610 = 830 | 2) | -445 + 984 = 539 | 3) | 906 + 262 = 1168 |
| 4) | 674 + 466 = 1140 | 5) | 53 − 729 = -676 | 6) | 447 − 701 = -254 |