998/999×998能简便要简便
问题描述:
998/999×998
能简便要简便
答
998/999×998
=(998\999)*(999-1) (乘法分配律)
=998\999*999-998\999
=998-998\999
=997又1\999
呵呵,加油!有什么不懂得再问,诚答!
答
998/999×998
=998/999×(999-1)
=999×(998/999)-1×(998/999
=998-998/999
=997+1-998/999
=997+1/999
=997又999分之1