The most effective way is to do the problem. If you don't lose many points in multiple-choice questions and fill-in-the-blank questions, do typical big questions. If you lose a lot of points in all the questions, I suggest you conquer multiple-choice questions and fill-in-the-blank questions first, because there are many skills in these two questions, and it is relatively easy to improve 20 points after mastering them. For the big problems behind, don't pursue the so-called skills, but master one or two general solutions and find some similar problems to practice. I believe it's not a big problem to raise 20 points. Don't read the knowledge points in the book at this time, because it doesn't actually play any role. Review the questions. If you don't know the knowledge, ask the teacher. This is more effective than reading a book. This is because your math foundation is poor, and it is much more effective for the teacher to explain it to you than to read it yourself. I wish you success in the college entrance examination and become the first!