3.6*7.2+2.8*3.6+36怎样简便计算
问题描述:
3.6*7.2+2.8*3.6+36怎样简便计算
答
=3.6*7.2+2.8*3.6+3.6*10
=3.6*(7.2+2.8+10)
=3.6*20
=72