Proportional formula: a:b=c:d, then ad=bc, if ad=bc, then A: B = C: D. Isometric property: a/b=c/d=…=m/n(b+d+…+n≠0), then (A+C+)
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Is junior high school math easy to learn? Junior high school mathematics is a very easy-to-learn subject, because at this time, the key content is several formulas such as proportion, equal proportion and compound proportion and the concept of nature, so we should summarize and summarize the three formulas when studying, so as to better help junior high school mathematics study.
Only in this way can we learn the difficulties of junior high school knowledge better and more clearly, so we should make clear the learning methods and concepts. For junior high school mathematics, we should clearly grasp the relevant knowledge.
For the three formulas of proportion, equal proportion and combined proportion, if we can't reason, we must clarify the concepts. For these three formulas, you can choose to recite them directly or record them. When using them, you can clarify concepts and problems by applying them.
What are the points for attention in junior high school mathematics?
When learning junior high school mathematics, the most important thing to pay attention to is to deduce the whole formula. Even if you don't understand it or can't deduce it, you need to memorize it, because in the application of junior high school mathematics, there are not many deformed things, and most of them need to apply relevant formulas to show relevant content.
Therefore, when you use and study, you should be clear about the specific writing of the formula and apply some data in the topic content to the formula, so that you can better help yourself solve related problems.
The recording method of junior high school mathematics is relatively simple, because the formula is not very complicated. If you can reason, try to reason out the formula, so that even if you don't remember it during the exam or use it, you can display all the contents. This is still the key content.