12.25-3.1+0.75-6.9 | 3.75×1.8+2.25×1.8 | 2.5×1.25×32 | [(9+0.25)×12]÷30 |
12.5×[(0.72-0.16)÷7] | 3.85×101-3.85 | 17.8-5.8-1.68÷0.4 | 56.9-16.2×39.5×0-17.9. |
12.25-3.1+0.75-6.9 | 3.75×1.8+2.25×1.8 | 2.5×1.25×32 | [(9+0.25)×12]÷30 |
12.5×[(0.72-0.16)÷7] | 3.85×101-3.85 | 17.8-5.8-1.68÷0.4 | 56.9-16.2×39.5×0-17.9. |