First, the textbook must be thoroughly understood, and the basic concepts must be familiar, and there can be no blind spots. The textbook should be read at least three times, and many concepts should be read 10 times and need to be deduced repeatedly.

Second, review the book, 90% of the questions should be done by yourself, don't always look at the analysis, you must take the time to do it yourself, and you won't look at the answers again, which is impressive.

Third, sum up the knowledge points of mathematics, sum up several small books, and sort them out according to your own understanding.

Fourth, study the real questions. Generally speaking, you did well in the past. When you do a real problem in 1 1, you will have a feeling that the real problem is particularly simple.

Fifth, 660 and 400 are both classics, so it's better to ponder them, which can improve the level of mathematical thinking and deepen the understanding of concepts. You will find that many things you understand are actually wrong or not deep enough.