9+99+999+9999+99999 = =

来源：学生作业帮助网编辑：六六作业网时间：2024/11/24 05:07:19

9+99+999+9999+99999==9+99+999+9999+99999==9+99+999+9999+99999==9+99+999+9999+99999=（10-1）+（100-1）+（1

9+99+999+9999+99999 = =
9+99+999+9999+99999 = =

9+99+999+9999+99999 = =
9+99+999+9999+99999
=（10-1）+（100-1）+（1000-1）+（10000-1）+（10000-1）
=10+100+1000+10000+100000-5
=111110-5
=111105

等于111105