3.15÷4-2.15×0.25的简算
问题描述：
3.15÷4-2.15×0.25的简算
答
3.15÷4-2.15×0.25
=3.15*0.25-2.15*0.25
=0.25*(3.15-2.15)
=0.25*1
=0.25