3/8*0.25+1/4*5/8-1/4简便算法
问题描述:
3/8*0.25+1/4*5/8-1/4简便算法
答
3/8×0.25+1/4×5/8-1/4
=1/4×﹙3/8+5/8-1﹚
=1/4×0
=0.