代数式求值问题是历年中考试题中一种极为常见的题型,它除了按常规直接代入求值外,还要根据其形式多样,思路多变的特点,灵活运用恰当的方法和技巧.本文结合近两年各地市的中考试题,介绍十种常用的求值方法,以供参考. The problem of algebraic expression evaluation is a very common type of questions in the mid-term examination questions in the calendar year. In addition to the conventional direct substitution into the evaluation, it is also necessary to flexibly use appropriate methods and techniques in light of its diverse forms and varied characteristics of ideas. Nearly two years in the middle of the city examination questions, introduced ten commonly used methods of evaluation for reference.