78乘26加7.8乘741减7.8 咋做
问题描述:
78乘26加7.8乘741减7.8 咋做
答
78X26+7.8X741-7.8 =78X(26+74.1-0.1) =78X100 =7800
78乘26加7.8乘741减7.8 咋做
78X26+7.8X741-7.8 =78X(26+74.1-0.1) =78X100 =7800