问题 计算题
脱式计算下面各题。
(1)0.125×9.3×0.8(2)9.83×1.5+1.5×0.17
(3)(12+23.1÷0.75)×0.4(4)2.8×10.1
(5)[18.8﹣(4.5+2.7)]÷5(6)50﹣13.5﹣6.5
  
答案

(1)0.125×9.3×0.8

       =0.125×0.8×9.3

       =0.1×9.3

       =0.93(2)9.83×1.5+1.5×0.17

       =(9.83+0.17)×1.5

       =10×1.5

       =15

(3)(12+23.1÷0.75)×0.4

        =(12+30.8)×0.4

        =42.8×0.4

        =17.12(4)2.8×10.1

       =2.8×(10+0.1)

       =2.8×10+2.8×0.1

       =28.28

(5)[18.8﹣(4.5+2.7)]÷5

       =(18.8-7.2)÷5

       =11.6÷5

       =2.32(6)50﹣13.5﹣6.5

       =50-(13.5+6.5)

       =50-20

       =30

单项选择题
单项选择题