4-3.25/1.3*0.7用简便方法计算
问题描述:
4-3.25/1.3*0.7用简便方法计算
答
4-3.25/1.3*0.7
=4-2.5×1.3/1.3*0.7
=4-2.5×0.7
=4-1.75
=2.25