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化归思想是把未知解的问题转化到在已有知识范围内可解问题的一种重要的思想方法.通过不断的转化,可把不熟悉、不规范、不简单的问题转化为熟悉、规范、简单的问题.在高中数学中,熟练运用化归思想可以帮助学生在各知识点之间相互渗透与转化,促进重点知识的融会贯通,有助于学生形成良好的思维习惯.高考对概率内容的考查,往往以实际应用题的形式出现.在解答概率题时,很多情况下,若能适当地运用化归思想就能迅速找到
The idea of returning to normalization is an important way of thinking that transforms the problem of unknowns into the problem of solvability within the scope of existing knowledge, and transforms the unfamiliar, non-normative, and simple problems into familiarity and standardization through continuous transformation , Simple problem.In high school mathematics, skilled use of the thought of return to normalization can help students in each point of knowledge between the penetration and transformation, and promote the integration of key knowledge, help students form a good thinking habit. Examination, often in the form of practical problems in the answer to the question of probability, in many cases, if the appropriate use of the thought of return will be able to quickly find