Question

100×98/99用简便方法计算？

Answer 1

简便方法为:
100×98/99
=(99+1)×98/99
=99×98/99+1×98/99
=98+98/99
=98又98/99
等于九十八又九十九分之九十八(因为手机上打不出这个，所以等式上写个又，但其实不能写又字)

Answer 2

=(99-1)*98/99
=99*98/99-98/99
=98-98/99
=97又1/99

Answer 3

＝(99+1)×98/99
＝99×98/99+1×98/99
＝98+98/99
＝98 98/99
乘法分配率

Answer 4

100×98/99
=(99+1)×98/99
=99×98/99+1×98/99
=98+98/99
=98又98/99

Answer 5

100×98/99
=(99+1)×98/99
=99×98/99+1×98/99
=98又98/99