学生在解答复杂的分数应用题时,常因量率不对应致错。因此教学中必须加强寻找量率对应关系的技能技巧的训练。一、由问题寻分率。已知单位“1”的量(标准量),要求某个分率的对应量,应该用标准量乘以分率。解答此类问题的关键是,根据问题准确地找出与问题对应的分 When students answer complex question scores, they often fail because of incorrect rate. Therefore, teaching must be strengthened to find the amount of the corresponding relationship between skills and skills training. First, the problem of seeking fractional rate. Known unit “1” amount (standard amount), the required amount of a corresponding fraction of the rate, you should use the standard rate multiplied by the fraction. The key to answering such a question is to accurately identify the points that correspond to the question based on the question