有理数运算是初中数学中最基本的运算,掌握常规的运算方法固然重要.但是在运算中,若能根据原式特点,巧妙地运用有关运算律,或者对算式适当变形,然后再进行计算,不仅可以使运算简捷,而且还有利于学生创新能力的培养.这里介绍几种运算技巧,供同学们参考. The rational number operation is the most basic operation in junior high school mathematics. It is important to master the conventional operation method. However, if you can use the relevant operation law skillfully according to the characteristics of the original type in the operation, or the appropriate deformation of the arithmetic expression, and then calculate, not only Can make the operation simple, but also conducive to the cultivation of students’ innovative ability. Here introduce several computing skills for students to refer to.