所谓变通性,是指思维活动不局限于某一框架之中,能融会贯通,并巧妙地根据已知条件,应用相关知识,使问题得以圆满解决.数学问题千变万化,要想既快又准地解题,总用一套固定的方法是行不通的,必须要有思维的变通性,即善于根据题设的相关知识,提出灵活的设想和解题方案. The so-called flexibility, refers to the thinking activity is not limited to a framework, can be mastered, and cleverly based on known conditions, the application of relevant knowledge, so that the problem can be satisfactorily solved.Mathematical problems are ever-changing, in order to quickly and accurately solve Problem, always use a fixed method is not feasible, you must have the flexibility of thinking, that is good at the basis of the relevant knowledge of the problem, put forward flexible ideas and solutions.