Question

负99又18分之17乘9的简便方法

多少啊 0 0.
有没有人知道啊
急急急!!TOT

Answer 1

-99又17/18*9
=(-99+17/18)*9
=-99*9+(17/18)*9
=-891+8.5
=-882.5

Answer 2

-99又17/18*9
=(-99+17/18)*9
=-99*9+(-17/18)*9
=-891+（-17/2）
=-891+8.5
=-882.5

Answer 3

（-99+（-17/18))x9=-99x9+(-17/18)x9=-891+(-17/2)=-899.5

Answer 4

负99又18分之17乘9
=-(99+17/18)*9
=-99*9+17/18*9
=-(100-1)*9+17/2
=-100*9+(1*9+8.5)
=-900+17.5
=-882.5

Answer 5

-99又18分之17×9
=-(99+17/18)*9
=-99*9+17/18*9
=-(100-1)*9+17/2
=-100*9+(1*9+8.5)
=-900+17.5
=-882.5