整式的乘除是初中数学中的一个重要知识点,也是中考考查的热点.这部分内容涉及面广,计算量较大.在解题的过程中,若能根据算式的结构特征,灵活选用一些特殊的方法,可使计算化繁为简、化难为易,现精选数例,分类阐述如下. The integral multiplication and division is an important knowledge point in junior high school mathematics and also a hot spot in the middle school examinations.This part involves a wide range of calculation and a large amount of computation.In the process of solving problems, according to the structural characteristics of the formula, The method can make the calculation of the complexity of the complex, the difficulty is easy, are selected a few cases, the classification described below.