| 1) | -606 − 11 = | 2) | 2 + 695 = | 3) | 650 − 459 = |
| 4) | 838 + 553 = | 5) | 412 + 49 = | 6) | 606 + 345 = |
| 1) | -606 − 11 = -617 | 2) | 2 + 695 = 697 | 3) | 650 − 459 = 191 |
| 4) | 838 + 553 = 1391 | 5) | 412 + 49 = 461 | 6) | 606 + 345 = 951 |