If junior high school math is not good, you should study hard, don't do problems blindly, and understand what the theorem definition in the book means. If you can't do it, you must recite examples. This method is very good, but it is aimed at math scores below 50. As long as you work hard enough, it is not a problem to get around 100. What's more, if you want to hit 120 or above, you should do more questions, then make your own wrong book and classify the questions. This is very important. You should know that you can't do it, and sort out some common problem-solving methods yourself. Seeing that he had no idea, he thought: What did he take in the exam? What piece of knowledge is it? Develop the habit of thinking, and you will have a direction when you encounter problems.
Mathematics in junior high school is completely different from mathematics in senior high school. Most of junior high school mathematics is to lay the foundation, and the knowledge is more substantive, while senior high school mathematics begins to be more abstract, reasoning and understanding the types of courses. The bare back formula is not enough. So you'd better know more knowledge instead of rote learning! The first floor makes sense. Practice more for better understanding.