四综述比和比例应用题题类较多,就主要问题来说,比的应用题有正比、反比、连比、复比、比例尺(有的同志将比例尺问题归属到“比例”里,但比例尺的求图矩、实矩和比例尺的计算,都可以用比的知识解决,故这种归属方法是不必要的)等几种;比例应用题有单比例、复比例、连锁比例、配分比例,混合比例等几种。 There are more than four summaries of the proportion of application problems, and in terms of the main problems, there are more than the proportion of application problems, inverse proportion, even ratio, complex ratio, scale (some comrades will scale the problem to the “ratio”, but the scale The calculation of moments, moments and scales, can be used to solve than the knowledge, so this method of belonging is unnecessary); and so on; the proportion of application questions with single ratio, complex ratio, the proportion of the chain, with the ratio, Mixed ratio and other several.