2022年中考数学“分类思想”题型高分突破必备解题技巧
分类思想是一种重要的数学思想,也是各地近年来中考数学命题的热点,因此我们在解数学题时,一是要准确,二是要全面,要尽可能地对问题作出全面的解答,全面、深入、严谨、周密地思考问题,使解答没有纰漏。在解题时,根据已知条件和题意的要求,分不同的情况作出符合题意的解答,比如:①对字母的取值情况进行筛选,根据题意作出取舍;②在不同的数的范围内,对代数式表达为不同的形式;③对符合题意的图形,作出不同的形状、不同的位置关系等。在中考中,许多题目的解答都要求运用分类讨论的思想来解答。本专题从五个方面对中考数学中“分类思想”题型进行深度剖析,深层分析该类型题目的解题技巧和方法,可以使学生更容易突破该类题夺取高数。
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