I recommend you to read some special books and learn some simple graphic reasoning or some simple calculation problems. You just need to remember the relevant conclusions and formulas, and then you can use them directly. Then you can do more questions. Many questions are actually comprehensive, and then you can listen to some lectures related to public examinations. Many famous teachers teach you how to cover questions. My math foundation is not very good, but after listening to the teacher's lectures, your correct rate will be much higher. Moreover, many questions in the national examination are more difficult than those in the provincial examination. Those topics that are relatively difficult and take up more time are suggested to give up, leaving energy and time to other topics such as speech and common sense.