整式是数学中最基本的式子,也是学习后续内容(如分式、一元一次方程及一元二次方程等)的基础.整式加减运算也是一个重要内容,它是学习一元一次方程的基础,也是今后继续学习整式的乘除、因式分解,以及分式、函数等的重要基础.但同学们在初学时往往会出现一些错误,为帮助同学们学好该部分内容,现将常见错误总结如下. Integer is the most basic formula in mathematics, but also the basis for learning the follow-up content (such as fractional, a linear equation and a quadratic equation, etc.) Integer addition and subtraction is also an important content, it is the basis for learning a radical equation, It is also an important basis for continuing to learn integral multiplication and division, factorization, and fractions, functions, etc. However, students often make mistakes when they begin their studies. To help students learn this part, the common mistakes are summarized as follows.