1. Mastering basic knowledge and skills: Mathematics is a basic subject, which requires students to have a deep understanding of basic concepts, theorems and formulas. We should master the basic knowledge of mathematics such as operation, algebra and geometry, and apply it to practical problems.

2. Understand the meaning of the problem and analyze the problem: In the process of solving the problem, read the problem carefully, understand the meaning of the problem and analyze the essence of the problem. For complex problems, we can try to disassemble them into simpler small problems and solve them step by step.

3. Take notes summary: Listen carefully in class and take notes. After class, you can review your notes in time, summarize the knowledge and methods you have learned, and deepen your understanding and memory of the knowledge points.

4. Do more exercises and mock exams: through a lot of exercises and mock exams, get familiar with the exam forms and questions, and improve the problem-solving ability and exam-taking skills. You can choose some high-quality problem sets and simulated test papers to practice.

5. Pay attention to the cultivation of thinking and problem-solving ability: Mathematics examination not only examines the memory and application ability of knowledge, but also pays more attention to students' thinking and problem-solving ability. You can improve your thinking level and problem-solving ability by participating in math competitions and doing some thinking training questions.

6. Arrange the time reasonably and manage the study plan: plan the study time reasonably and make full use of the spare time for study and review. Make a reasonable study plan, study methodically according to the plan, and avoid procrastination and rote learning.

7. Communicate with classmates and learn from each other: actively communicate and discuss with classmates, learn from each other and make progress together. You can team up to participate in some math competitions or teamwork, solve problems through cooperation and improve your math level.

In a word, if you want to get good grades in high school math exams, you need to master basic knowledge and skills, pay attention to thinking training and problem-solving ability, make a good time management and study plan, do more exercises and mock exams, and actively communicate with your classmates and learn from each other.