4.75*0.8+8*52.5的简便方法怎么做
问题描述:
4.75*0.8+8*52.5的简便方法怎么做
答
4.75*8+0.8*52.5
=4.75*8+8*5.25
=(4.75+5.25)*8
=10*8
=80