1. Strengthen the study of basic knowledge. If you don't have a solid grasp of the basic knowledge, you will be prone to make mistakes when doing problems. So you need to strengthen the study of basic knowledge, such as addition, subtraction, multiplication and division, fractions, decimals and so on.
2. Improve the computing power. If your calculation ability is not strong, you are prone to make mistakes when doing problems. So you need to practice to improve your computing ability.
3. Check your own calculation process. After finishing a topic, you should carefully check your calculation process to see if there are any omissions or mistakes. If so, you should correct it in time.
Ask for help. If you always make mistakes when doing math problems, you can ask your teacher or classmates for help. They can help you find out the cause of the mistake and provide you with the right solution.
5. Stay calm. Keep calm when doing math problems, and don't make mistakes because of temporary nervousness. If you feel nervous, you can relieve your mood by taking a deep breath.
In short, in order to avoid making mistakes when doing math problems, you need to strengthen the study of basic knowledge, improve your calculation ability, check your own calculation process, ask for help and stay calm. As long as you can do this, I believe you can avoid making mistakes when doing math problems.