57乘百分之75加44乘0.75减4分之3简便算法,
问题描述:
57乘百分之75加44乘0.75减4分之3简便算法,
答
57乘百分之75加44乘0.75减4分之3
=57*0.75+44*0.75-0.75
=(57+44-1)*0.75
=100*0.75
=75