1000-200=800
（800-200）÷200=300%
张家村要修一条长1000米的水渠,已经修好了200米,剩下的长度比修好的多百分之几?要算式
张家村要修一条长1000米的水渠,已经修好了200米,剩下的长度比修好的多百分之几?要算式
数学人气：854 ℃时间：2020-03-13 09:02:14
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