1. Basic knowledge: including numbers and algebra, geometry and graphics, functions and equations, etc. We should master all kinds of basic concepts, formulas and theorems and use them flexibly to solve practical problems.

2. Problem-solving skills: master various problem-solving methods and skills, such as substitution, analysis and synthesis. We should be able to choose the appropriate problem-solving methods according to the characteristics of the topic and be skilled in using them.

3. Common questions: Familiar with the common questions in the senior high school entrance examination, such as multiple-choice questions, fill-in-the-blank questions, and answer questions. To understand the thinking and steps of solving each question type, you can answer quickly and accurately.

4. High-frequency test sites: Understand the high-frequency test sites of high school mathematics and focus on reviewing these knowledge points. We should deeply understand and master these knowledge points and be able to skillfully use them to solve various problems.

5. Real question training: By doing a lot of real questions and simulation questions over the years, you are familiar with the types and difficulties of the exam and improve the speed and accuracy of problem solving. We should be able to analyze the causes of wrong questions, correct them in time, and improve our ability to solve problems.

6. Time management: It is very important to arrange time reasonably in the exam. Learn to allocate time reasonably, master the rhythm of answering questions, and avoid using enough time or wasting too much time.

In short, the three rounds of math review in senior high school entrance examination need to master basic knowledge, problem-solving skills and common questions, focus on reviewing high-frequency test sites, and improve problem-solving ability and time management ability by doing real questions and simulation questions. Only by comprehensive preparation can we get good grades in the exam.