45*55分之3怎么算?
问题描述:
45*55分之3怎么算?
答
45*55*1/3=(45*1/3)*55=15*55=(10+5)*(50+5)=500+50+250+25=750+75=825
45*55分之3怎么算?
45*55*1/3=(45*1/3)*55=15*55=(10+5)*(50+5)=500+50+250+25=750+75=825