简便方法计算:3.4乘7.5+34乘0.25
问题描述:
简便方法计算:3.4乘7.5+34乘0.25
答
:3.4乘7.5+34乘0.25 =34*0.75+34乘0.25 =30*(0.75+0.25)=34*1=34
简便方法计算:3.4乘7.5+34乘0.25
:3.4乘7.5+34乘0.25 =34*0.75+34乘0.25 =30*(0.75+0.25)=34*1=34