3.5x5/4+5.5x80%+0.8怎样用简便方法做
问题描述:
3.5x5/4+5.5x80%+0.8怎样用简便方法做
答
=3.5x0.8+5.5x0.8+0.8=(3.5+5.5+1)x0.8=10x0.8=8
3.5x5/4+5.5x80%+0.8怎样用简便方法做
=3.5x0.8+5.5x0.8+0.8=(3.5+5.5+1)x0.8=10x0.8=8