论文部分内容阅读
随着课程改革的深入,概率知识备受人们的关注,近年来有关概率的问题考查正在逐渐升温,很值得我们去重视研究。从2006年课改实验区的中考试题来看,概率在试题中占有一定的比例,一般在10分左右。下面采撷部分概率中考题并加以归类浅析,供同学们在学习中借鉴和参考。一、以正方体骰(tou)子为载体的概率中考题例1 (2006年北京市)掷一枚质地均匀的正方体骰子,骰子的六个面上分别刻有1到6的点数,掷得面朝上的点数为奇数的概率为( )
With the deepening of curriculum reform, probabilistic knowledge has attracted people’s attention. In recent years, the examination of probabilistic issues is gradually heating up, and it is worth our attention to research. Judging from the examination questions in the experimental area of the curriculum reform in 2006, the probability occupies a certain proportion in the test questions, generally around 10 minutes. The following questions are taken in part of the probabilistic exam questions and they are categorized for analysis and reference for students in their studies. I. Probability of using the cube as a carrier in the examination example 1 (Beijing, 2006) A uniform cube with a uniform texture is engraved with six to six points on each of the six faces of the dumplings. The probability of an odd number of points facing up is ()