1/5-1/10-1/20-1/40-1/80-1/160简算

来源：学生作业学帮网编辑：学帮网时间：2024/05/31 10:50:06

1/5-1/10-1/20-1/40-1/80-1/160
=(160/5-16-8-4-2-1)/160
=(32-16-8-4-2-1)160
=1/160