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复杂的分数应用题,或因其数量关系复杂,量与率的对应关系不易觉察,或单位“1”不统一,或条件隐蔽,学生解答起来较困难。教师在教学中要善于根据不同的题型,教给学生不同的解题方法。一、找量率的对应关系解题分数应用题中,一定的数量总有一定的分率与之对应,找准题中量与率的对应关系,再根据分数乘除法的意义来解答,这是分数应用题最基本的解题方法。例:甲乙两车间共有工人196人,如果把甲车间人数的2/7调入乙车间,这时乙车间比甲车间多16人。原来两车间各有多少人?
Complex scores of application questions, or because of the complexity of the number of relations between the volume and rate of imperceptible, or unit “1 ” is not uniform, or hidden conditions, students answer more difficult. Teachers in teaching should be good at according to different types of questions, teach students different ways to solve problems. First, find the corresponding relationship between the measurement rate Problem-solving questions, a certain amount of total there is a certain fraction of the corresponding correspondence to find the correct relationship between the amount and rate, and then multiply and divide according to the meaning of fraction to answer, which Is the most basic problem-solving problem solving method. Example: There are 196 workers in A and B workshops. If 2/7 of A workshop is transferred to B workshop, B workshop will have 16 more workers than A workshop. How many people each of the two workshops?