分数简便运算 1-1/10-1/100-1/1000-1/10000不是小数!

问题描述:

分数简便运算 1-1/10-1/100-1/1000-1/10000
不是小数!

1-1/10-1/100-1/1000-1/10000
=1-(1/10+1/100+1/1000+1/10000)
=1-1111/10000
=8889/1000