| 1) | 241 + 83 = | 2) | 788 + 805 = | 3) | 454 − 814 = |
| 4) | 992 − 116 = | 5) | 800 + 226 = | 6) | 989 + 236 = |
| 1) | 241 + 83 = 324 | 2) | 788 + 805 = 1593 | 3) | 454 − 814 = -360 |
| 4) | 992 − 116 = 876 | 5) | 800 + 226 = 1026 | 6) | 989 + 236 = 1225 |