比和比例的内容较多,也比较复杂,复习时,要注意辨析易混概念,准确地理解并掌握概念,灵活运用概念解答有关的问题。一、比的意义和性质比的意义是:两个数相除又叫两个数的比。由定义可以看出,两个数的比表示两个数之间的相除关系,不是一个数除以另一个数的商。相比的两个量,可以是同类量,也可以是不同类量。当两个相比的数量是同类量时,所比较的是它们之间的倍数 More than the ratio and content, but also more complex, review, we should pay attention to identify the concept of easy to mix, accurately understand and grasp the concept, the concept of flexible use of the problem-solving. First, the ratio of the meaning and nature of the meaning than: two numbers is also called the ratio between the two numbers. It can be seen from the definition that the ratio between two numbers means the division between two numbers, not the quotient of one number divided by another. Compared to the two quantities, can be the same amount, it can be different types of quantities. When the two compared to the same amount of quantity, the comparison is between them