Review well before the exam. I don't know which version of math you are studying. First of all, you should review from key chapters, and review two or three chapters every week from three to four weeks before the exam. By doing the questions, you can count the knowledge points one by one. The number of questions in sub-key chapters and chapters with good personal level can be slightly less. It is recommended to make two rolls of paper on the front and back, but the topic selection is difficult and extensive, which is not as simple as usual homework. Focus on the key chapters and chapters that you didn't learn well in the second to third weeks, increase the number of questions, at least three rolls of paper, and focus on the chapters to be learned after the mid-term, because most students don't have a good grasp of the key chapters after the mid-term. In the last week, if you are a student with 85 points or above, I suggest you do some difficult questions appropriately. If you are a student with a score below 85, I suggest you review the problems accumulated in the books you reviewed throughout the semester to avoid making mistakes in the same place again.

During the exam, I suggest that if you find that you can't solve the problem in five minutes when you fill in the blanks, skip the next question at once. If you haven't thought about the big problem in fifteen minutes, then give up for the time being. Go back and check all the questions you have answered. After confirming the correctness, the remaining time can be used to answer questions that were not known before. The order and use should be arranged according to your own understanding of the questions that you can't. Answer the question that may score first, over!