4/5×0.875+3/5×7/8-2/5×87.5% 简便计算

问题描述:

4/5×0.875+3/5×7/8-2/5×87.5% 简便计算

4/5×0.875+3/5×7/8-2/5×87.5%
=0.875×(4/5+3/5-2/5)
=0.875×1
=0.875