| 脱式计算。(能简算的要简算) | ||||
|
| (1)12.5×3.2×0.047 =12.5×8×0.4×0.047 =100×0.4×0.047 =1.68 |
(2)240×(42.5×1.4÷0.25) =240×(59.5÷0.25) =240×238 =57120 |
| (3)7.3×1.12+0.73×8.8 =0.73×(11.2+8.8) =0.73×20 =14.6 |
(4)(2.9-2.9×0.9)÷(3.7-2.7) =2.9×0.1÷1 =0.29 |
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