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比例是传统算术的重要内容之一,历史上有许多数学问题都是采用比例的方法解决的(例如,池塘里养了一些鱼,第一次捕上来200尾,做好标记后放回池塘,数日后再捕上来100尾,发现有标记的鱼有5尾,问池塘里大约有多少尾鱼?2004年中央国家机关公务员考试题)。比例是进一步掌握中学物理、数学、化学等知识的基础,也是对小学生渗透一种量变化,另一
Proportion of the traditional arithmetic is an important part of the history of many mathematical problems are used to solve the proportion of methods (for example, some fish in the pond, the first catch up to 200, do a good job of marking back into the pond, A few days later catch up 100, found there are 5 marked fish, ask the pond about how many fish? 2004 central state organs civil service exam questions). The ratio is the basis for further mastering the knowledge of physics, mathematics and chemistry in middle schools. It is also a measure of the infiltration of primary school students by one kind of change.