Номер 1258
Обчисли:
| 1) 4 | 17 | + | 10 | = 5 | 8 | ; |
| 19 | 19 | 19 |
| 2) 8 | 10 | + 7 | 8 | = 16 | 5 | ; |
| 13 | 13 | 13 |
| 3) 7 | 4 | – 1 | 17 | = 5 | 10 | ; |
| 23 | 23 | 23 |
| 4) 14 | 11 | – 8 | 12 | = 5 | 26 | ; |
| 27 | 27 | 27 |
| 5) 18 | 1 | – 7 | 10 | = 10 | 8 | ; |
| 17 | 17 | 17 |
| 6) 8 | 3 | – | 28 | = 7 | 26 | . |
| 31 | 31 | 31 |
Обчисли:
| 1) 4 | 17 | + | 10 | = 5 | 8 | ; |
| 19 | 19 | 19 |
| 2) 8 | 10 | + 7 | 8 | = 16 | 5 | ; |
| 13 | 13 | 13 |
| 3) 7 | 4 | – 1 | 17 | = 5 | 10 | ; |
| 23 | 23 | 23 |
| 4) 14 | 11 | – 8 | 12 | = 5 | 26 | ; |
| 27 | 27 | 27 |
| 5) 18 | 1 | – 7 | 10 | = 10 | 8 | ; |
| 17 | 17 | 17 |
| 6) 8 | 3 | – | 28 | = 7 | 26 | . |
| 31 | 31 | 31 |