1. Find out the problem: First of all, you need to find out the reasons for the fluctuation of your grades. Is it because your study method is wrong, or because you don't have enough time to review, or because you feel nervous during the exam?

2. Make a study plan: Once you find the cause of the problem, you can make a plan to solve it. For example, if you find that your learning method is wrong, you can try to change your learning method; If you find that you don't have enough time to review, you can adjust your time management strategy.

3. Ask for help: If you find that you can't solve the problem, don't be afraid to ask for help. You can ask your teacher, parents or classmates for help. They may give you some useful advice.

4. Keep practicing: Mathematics is a subject that needs a lot of practice. Only through constant practice can we master the knowledge of mathematics and improve our mathematics scores.

5. Keep a positive attitude: Finally, you need to keep a positive attitude. Don't give up because of one or several failures. As long as you stick to it, you will definitely improve your math scores.