| 1) | 304 + 964 = | 2) | 378 + 411 = | 3) | -732 + 686 = |
| 4) | -188 + 870 = | 5) | -999 − 188 = | 6) | -321 + 45 = |
| 1) | 304 + 964 = 1268 | 2) | 378 + 411 = 789 | 3) | -732 + 686 = -46 |
| 4) | -188 + 870 = 682 | 5) | -999 − 188 = -1187 | 6) | -321 + 45 = -276 |