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在近几年全国各地的中考试卷中,概率内容所占比重大约为7%.题型多为低档难度的选择、填空题,或为中档难度的解答题.我们要对必然事件、不可能事件、随机事件的概念能够正确地理解,熟练运用列举法(包括列表、画树形图)计算简单事件发生的概率;会通过比较概率的大小来分析游戏的公平与否等.在概率与函数、三角形、圆等知识的交汇点设计的题目,也越来越引起人们的关注.对通过
In recent years, in all parts of the country in the examination paper, the proportion of probability content is about 7% .Most questions for the choice of low difficulty, fill in the blank question, or for the mid-range difficulty of the answer questions.We want to inevitable events, impossible events , The concept of random events can correctly understand, skilled use of enumeration (including the list, draw tree) to calculate the probability of a simple event; will compare the probability of the size of the game to analyze the fairness, etc. In the probability and function, Triangle, circle and other knowledge of the meeting point of the design issues, but also cause for more and more people’s attention.