| 1) | 313 + 204 = | 2) | 935 + 893 = | 3) | -557 − 816 = |
| 4) | -859 − 150 = | 5) | -599 − 195 = | 6) | -841 − 966 = |
| 1) | 313 + 204 = 517 | 2) | 935 + 893 = 1828 | 3) | -557 − 816 = -1373 |
| 4) | -859 − 150 = -1009 | 5) | -599 − 195 = -794 | 6) | -841 − 966 = -1807 |