问题 计算题
脱式计算。(能简算的要简算)
(1)12.5×3.2×0.047(2)240×(42.5×1.4÷0.25)
(3)7.3×1.12+0.73×8.8(4)(2.9-2.9×0.9)÷(3.7-2.7)
答案

(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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