Relax, junior high school 1 will happen. I was not used to it as soon as I entered junior high school. As long as there are questions you don't understand, ask the teacher or classmates after class. Don't pretend to understand them. Also, buy a math extracurricular problem and limit the time when you do it. For example, it takes 1 hour to make a page for the first time, and 50 minutes for the next time to exercise your grasp of time and improve accuracy. Wish you success!