Pay attention to the consolidation of basic knowledge points, sometimes when you look at knowledge points, you will be blind when you do problems. Don't doubt yourself, which shows that mathematical logic is not very strong and has not accumulated enough knowledge points. Knowing the answer to a question does not mean complete understanding. Clear your mind, knowledge points need to be connected into a line. Constructing knowledge network and improving mathematics literacy. The most important thing is to build a knowledge system so that you can find it quickly when you need it and understand its application in solving problems.