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数学来源于生活,其中概率与实际生活的联系更为紧密。从近几年各地的中考试卷来看,概率的考试题目类型大致可分为三类:(1)利用频率值估计概率;(2)利用面积计算概率;(3)利用画树状图或列表法解决生活类实际应用问题。其中前两类大都以选择。填空题呈现,而第三类则是以中档难度的解答题呈现。据不完全统计,绝大多数地方的中考试卷中都是以解答题型来考查概率问题。可见,熟练地掌握概率的计算方法和用列表法或画树状图求概率的策略就是关
Mathematics comes from life, in which probability is more closely related to real life. Judging from the mid-term examination papers in recent years, the types of prob- lem examination questions can be broadly divided into three categories: (1) estimation of probability using frequency values; (2) use of area to calculate probabilities; (3) use of drawn tree or list Act to solve the practical application of life issues. Most of the first two categories to choose from. Fill in the blank question appears, while the third category is based on mid-range difficulty answer questions presented. According to incomplete statistics, most of the local examination papers are based on the solution of the question type to examine the probability problem. Visible, proficient in the calculation of probability and the method of using the list or draw a tree map probability is off