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在小学高年级,总有学生对列方程解应用题感到害怕,主要原因是由算术方法解题转变为列方程的方法解题,思维遇到障碍,找不到等量关系。因此,学会建立等量关系是列方程解应用题的关键。一、抓住题目中的关键句建立等量关系有些应用题,题目中总有体现数量关系的那句关键句,比如,“……比……多(少)……”“……是……的几倍”“……比……的几倍还多(少)……”等。只要抓住这些关
In the upper primary school, there are always students who are afraid of solving the column equation. The main reason is that the method of solving the column equation by the arithmetic method solves the problem, and the thinking encounters obstacles and can not find the equivalent relationship. Therefore, learning to establish the equivalent relationship is the key to solve the column equation solution. First, to seize the key words in the subject to establish the same amount of relations Some application questions, the title of the total number of sentences that reflect the relationship between the number, for example, “... ... more than (less) ...... ” “... ... is several times ... ... ”“ ... ... more than several times more (less) ...... ”and so on. Just grab these off