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在学习了分数乘法应用题后,龙老师出了以下两道题:1.一根1米长的钢管,第一次用去它的3/10,第二次用去3/10米。哪一次用去的多一些?2.一根钢管,第一次用去它的3/10,第二次用去3/10米。哪一次用去的多一些?A.第1次用去的多B.第2次用去的多C.相等D.不一定龙老师说:“以上两题,从形式上看,几乎差不多,但仔细分析一下,它们之间又是有区别的。谁能看出它们的不同吗?”张宁说:“第一题,题目中已经知道钢管的长度是1米,所以第一次用去它的
After learning the fractional multiplication application, Mr. Long made the following two questions: 1. A 1-meter long steel pipe, 3/10 for the first time and 3/10 meters for the second time. Which time to use more? 2. A steel pipe, the first time to go with it 3/10, the second time spent 3/10 meters. Which time to use more? A. The first used more than B. The second used more C. Equal D. Not necessarily the teacher said: ”The above two questions, from the formal point of view, almost the same , But after careful analysis, there is a difference between them. Who can see the difference? “” Zhang Ning said: "The first question, the title already know the length of the steel pipe is 1 meter, so the first Use it for the second time