计算下面各题(能用简便方法的用简便方法).
| 22.7×1.25×O.8 | 3.91×2.8+6.09×2.8 |
| 9.83×(3.8-2.3)+1.5×6.17 | 3.6×51+36×4.9 |
| 7.8×9.9 | 5.4-3.2+12.6-7.8 |
| 7.2×4.1-9.5÷7.6 | 8.125×3+7×8.125 |
| (0.75×27.5-3.405)÷0.8 | [0.16+(3-1.272)÷1.2]×1.25. |
计算下面各题(能用简便方法的用简便方法).
| 22.7×1.25×O.8 | 3.91×2.8+6.09×2.8 |
| 9.83×(3.8-2.3)+1.5×6.17 | 3.6×51+36×4.9 |
| 7.8×9.9 | 5.4-3.2+12.6-7.8 |
| 7.2×4.1-9.5÷7.6 | 8.125×3+7×8.125 |
| (0.75×27.5-3.405)÷0.8 | [0.16+(3-1.272)÷1.2]×1.25. |