567乘123.123-123乘567.567,简便算法
问题描述:
567乘123.123-123乘567.567,简便算法
答
567*123.123-123*567.567
=567*(123+0.123)-123*(567+0.567)
=567*123+567*0.123-123*567-123*0.567
=567*0.123-123*0.567
=0