| 1) | -681 + 709 = | 2) | 338 + 90 = | 3) | -636 − 294 = |
| 4) | 308 − 360 = | 5) | -989 + 903 = | 6) | 263 + 867 = |
| 1) | -681 + 709 = 28 | 2) | 338 + 90 = 428 | 3) | -636 − 294 = -930 |
| 4) | 308 − 360 = -52 | 5) | -989 + 903 = -86 | 6) | 263 + 867 = 1130 |