| 1) | -138 + 906 = | 2) | 311 − 116 = | 3) | -865 + 627 = |
| 4) | -472 − 616 = | 5) | -981 + 209 = | 6) | 242 + 821 = |
| 1) | -138 + 906 = 768 | 2) | 311 − 116 = 195 | 3) | -865 + 627 = -238 |
| 4) | -472 − 616 = -1088 | 5) | -981 + 209 = -772 | 6) | 242 + 821 = 1063 |