用简便方法计算下面各题.

分类: 作业答案 • 2021-11-30 10:14:02

问题描述：

用简便方法计算下面各题.
9÷0.125 25.25×0.65×4÷0.65 0.485×102-48.5
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答

9÷0.125=9*1/8 =9/8 25.25×0.65×4÷0.65=25.25*4*(0.65/0.65)=25.25*4*1=1010.485×102-48.5=48.5*1.02-48.5=48.5*(1.02-1)=48.5*0.02=0.485*2=0.97