When junior high school students enter high school mathematics, there is often a phenomenon of "understanding as soon as you listen, knowing as soon as you look, and making mistakes as soon as you do it". What is the main reason? First of all, believe in yourself and have confidence in yourself. Furthermore, you should preview yourself first, and don't just read math books, which are generally shallow. You should find some reference books to read typical examples, and then find a few similar questions to do it again, instead of doing one-on-one answers, which will form the habit of answering (remember). If it is wrong, look at the difference between the answer method and yours, whether it is a miscalculation or a wrong method or not at all, and find the wrong reason. If you make a mistake, you should cultivate your computing ability, and don't always rely on a calculator (remember), because you don't need an exam. Many people often do it, but they don't have time to calculate or make a mistake. This is a loss. If you use the wrong method or the wrong way of thinking, you can use the method of doing the wrong problem set to extract the problems that you have been wrong, and do them again when you have time to deepen your impression. You can also ask more teachers or good classmates. Don't be embarrassed. Of course, we should also listen carefully in class, because teachers usually talk about the most important and typical problems. Don't be busy taking notes. Understanding is more important. The understanding here is not only what the teacher said, but also the direction of his thinking. Give me some advice and you can do it yourself. It's impossible to practice math after that. But not all the questions have been done. If the questions are similar, don't waste any more time if you know the answer at a glance.

I hope the above methods can help you with your math study.