1/4乘0.8加1/2除3/4减0.8的简便算法简便算法哦
问题描述:
1/4乘0.8加1/2除3/4减0.8的简便算法
简便算法哦
答
原式=1/4*0.8-0.8+1/2*4/3
=(1/4-1)*8/10+2/3
=-3/5+2/3
=(-9+10)/15
=1/15