问题
计算题
脱式计算下面各题。
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答案
(1)0.125×9.3×0.8
=0.125×0.8×9.3
=0.1×9.3
=0.93
=(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
=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
=50-(13.5+6.5)
=50-20
=30
单项选择题