计算(﹣99又99分之98)×50 简便方法!
1个回答

﹣99又99分之98换成-100+99分之一再乘50

(﹣99又99分之98)×50

= -(99又99分之98)×50

= -(100-1/99)×50

= -(100×50-50/99)

= -5000+50/99

= -4999又99分之49