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[知识导序 ][知识导练 ](一 )比、比例的意义和性质议一议 ( 1 )什么叫做比 ?( 2 )比和比例各有什么基本性质 ?( 3 )把表中 ( )填写完整。( 4 )比和分数、除法有什么联系和区别 ?填写下表。区 别各部分的关系比表示两个数的关系前项比值除法是一种 ( )除号 (÷ )分数
(1) What is the ratio? (2) What are the basic characteristics of proportions and proportions? (3) The table () fill in completely. (4) What is the relationship and difference from the score and division? Fill in the form below. The relationship between the different parts of the ratio of the relationship between the two numbers The ratio of the preceding division is a () division (÷) score