[(8.7-7.5)÷0.2]×0.15的简便方法
问题描述:
[(8.7-7.5)÷0.2]×0.15的简便方法
答
[(8.7-7.5)÷0.2]×0.15
=(1.2÷0.2)×0.15
=6×0.15
=0.9
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