怎样解题 ?各有各的说法 .笔者在拙著《初中数学解题思维窍门》一书中作了扼要介绍 .本文拟摘要介绍几种 .愿借《数学教师》的广泛影响就教于同行 .一、不算分母算分子例 1　比较 - 322 9,- 1211,- 9689,- 1615的大小 .常规　通分 ,变异分母为同分母再比较大小 ,但本题的最小公 How to solve the problem? Each has its own statement. The author made a brief introduction in the book “Junior’s Mathematical Problem-solving Thinking Tips”. This article is intended to introduce several types of introductions. I would like to use the “mathematic teacher” to teach my colleagues. , Not counting the denominator. Calculate the size of the case. Compare the size of 322 9, - 1211, - 9689, - 1615. For the routine, the denominator of the variance is the size of the same denominator, but the minimum