一根绳子长4米,先用去2/1,在用去2/1米,还剩多少米?

问题描述:

一根绳子长4米,先用去2/1,在用去2/1米,还剩多少米?
一根绳子长4米,先用去2/1,在用去2/1米,还剩多少米?

1米