简便计算;99分之98×98
问题描述:
简便计算;99分之98×98
答
(98/99)×98
=(98/99)×(99-1)
=(98/99)×99-(98/99)×1
=98-(98/99)
=97又99分之1
答
99分之98×98
=99分之98×(99-1)
=98/99*99-98/99
=98-98/99
=97又1/99
答
=99分之98×(99-1)
=99分之98×99-99分之98×1
=98-99分之98
=97又99分之1