来自彭仁明的问题
用简便方法计算下面各题.9÷0.12525.25×0.65×4÷0.650.485×102-48.5==========
用简便方法计算下面各题.
9÷0.12525.25×0.65×4÷0.650.485×102-48.5
===
===
===
=
1回答
2020-10-15 01:37
用简便方法计算下面各题.9÷0.12525.25×0.65×4÷0.650.485×102-48.5==========
用简便方法计算下面各题.
9÷0.12525.25×0.65×4÷0.650.485×102-48.5
===
===
===
=
9÷0.125=9*1/8=9/825.25×0.65×4÷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