有理数运算是初中数学的基本运算,同学们刚进入初中,对代数的了解还比较肤浅,在运算中经常出现各种各样的问题,如运算步骤过繁,速度慢,准确性差等.要想更有效地进行有理数的运算,同学们应仔细观察算式的结构特征,注意运算顺序,灵活运用运算律和运算法则,恰当地应用一些解题技巧.现将一些解题技巧归纳如下,同学们可以看一看自己是不是在平时的解题过程中用到了这些方法. The rational number operation is the basic operation of junior high school mathematics, the students just entered junior high school, the understanding of algebra is still relatively superficial, often appear in the operation of a variety of problems, such as the operation steps are too complicated, slow, and poor accuracy. To perform rational number calculations more effectively, students should carefully observe the structural features of the formulas, pay attention to the sequence of operations, use the operating laws and algorithms flexibly, and apply some problem-solving techniques. Some of the problem-solving techniques are summarized as follows. Students can Take a look at whether or not you used these methods in the usual solution process.