近年来各级各类初中数学竞赛中,求几个变数之和的问题常常出现.就笔者掌握的资料来看,此种题目按性质大致可划分为两大类:一是求连续性变数和;二是求离散性变数和.由于这两类问题的性质不同,因而处理的方法各异.本文就此作一简述,供参考. 一、整体意识法 整体意识使我们不被某些非本质的枝节所左右,而从整体上去把握事物,它能改进解题进程,也能使不少用常规方法不可解 In recent years, in the various types of junior high school math competitions, the problem of summing up several variables has often arisen. According to the information the author has, the nature of such problems can be roughly divided into two major categories: First, the continuity of variables and The second is the pursuit of discrete variables and. Due to the nature of these two types of problems are different, so the method of processing varies. This article makes a brief description for reference. First, the overall awareness of the overall consciousness of the law so that we are not certain non-essential About the whole branch, and to grasp things as a whole, it can improve the problem-solving process, and can also make many unsolvable by conventional methods.