一根电线长28米,先用去它的1/2,再用去1/2米,还剩几米?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 13:26:20
![一根电线长28米,先用去它的1/2,再用去1/2米,还剩几米?](/uploads/image/z/13431909-21-9.jpg?t=%E4%B8%80%E6%A0%B9%E7%94%B5%E7%BA%BF%E9%95%BF28%E7%B1%B3%2C%E5%85%88%E7%94%A8%E5%8E%BB%E5%AE%83%E7%9A%841%2F2%2C%E5%86%8D%E7%94%A8%E5%8E%BB1%2F2%E7%B1%B3%2C%E8%BF%98%E5%89%A9%E5%87%A0%E7%B1%B3%3F)
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一根电线长28米,先用去它的1/2,再用去1/2米,还剩几米?
一根电线长28米,先用去它的1/2,再用去1/2米,还剩几米?
一根电线长28米,先用去它的1/2,再用去1/2米,还剩几米?
28-28*1/2-1/2=28-14-1/2=14-0.5=13.5