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分数(百分数)应用题是一种特殊的小学数学应用题。其数量关系复杂,解法和以前学过的整数、小数应用题不完全相同,历来都是教学中的重点和难点。我在教学中体会到,要突破这一重点和难点,除了教会学生掌握课本上的解题方法外,如果再引导学生用归一法解答分数应用题,将新旧知识结合起来,相互渗透,学生会感到易学易懂,效果较好。现结合小学数学课本中的有关题目说明如下。
Score (percentage) Application questions is a special primary school mathematics application questions. The relationship between the number of complex solutions and previously learned integer, decimal applications are not exactly the same, has always been the teaching of the key and difficult. I learned in teaching, to break through this key and difficult, in addition to teaching students to master the textbook on the problem-solving methods, and then guide the students to use the normal method to answer scores application questions, the old and new knowledge combine to penetrate each other, the student union Feel easy to learn, the effect is better. Now combined with primary school mathematics textbooks related topics described below.