论文部分内容阅读
有些应用题,题意复杂,思路隐晦,比较不好找到解题突破口,要是能根据题意画出图示,便可化难为易,得到非常漂亮的解答。典型例题:育新小学三(1)班订《小学生学习指导》《小学生优秀作文》的名单如下:订这两种杂志的一共有多少人?思路分析:有的同学认为计算订这两种杂志的总人数,非常简单,只要把订《小学生学习指导》的人数和订《小学生优秀作文》的人数加起来就可以,即10+8=18(人)。其实不是这样,因为有的同学是两种杂志都订,计算时只能算一次。解答这类应用题时,要注
Some application questions, the questions are complex, the idea is obscure, is not good to find a solution to the problem, if we can draw a diagram according to the problem, we can make it difficult for easy, get a very beautiful answer. Typical example: Yuxin Primary School Three (1) class set << primary school students learn >> << primary school students excellent composition >> list is as follows: set a total of these two kinds of magazine a total number of people? Train of thought: Some students think that the calculation of these two types of magazine The total number of pupils is very simple. Just add up the number of “primary school pupils” and the number of pupils who write “excellent pupils”, that is, 10 + 8 = 18 (persons). In fact, this is not the case, because some students are two magazines are set, the calculation can only be counted once. To answer this type of application questions, be sure to note