分数应用题之“二十八字”口诀

摘要

Fraction practical problems is a difficult but important point in primary school mathematics teaching, combined with long time of teaching practice, the writer summarizes the "28-word formula",which can quickly determine the standard amount,comparative volume,the corresponding fraction of comparative volume,help students quickly find problem-solving approaches, so it is a good inspire for teachers and students.%　　分数应用题是小学数学教学的重点和难点，文中结合长期教学实践归纳出的分数应用题“二十八字口诀”，能够快速判断出标准量、比较量、比较量对应的分率，很快找到解题方法，能很好启迪教师的教和学生的学。