What you are facing now is the senior high school entrance examination, not the Olympic Mathematics. You can still make great changes in 90 days. 1: Doing the problem requires not only accurate answers, but also understanding the thinking of doing the problem. How to start is the key. The basic knowledge points involved in each question must be firmly grasped. 2. Pay attention to the textbook and look at the examples above, and you will find problems and knowledge points that you have not noticed. When the teacher explained, he said something that he thought many of you didn't master, so your thinking was attracted to that knowledge point and went to that angle. In fact, there are many other knowledge points that he doesn't think are so important (often seemingly simple things are easily overlooked, but it may be difficult to combine a few simple knowledge). 3. I'll give you a suggestion: you must concentrate on the exam and don't spend too much time on one question.