I don't know how much you have read, but no matter what grade you are in, the only shortcut to learning mathematics is to listen carefully in class. Review the day's lessons immediately after you go back, and then do appropriate exercises (not quantity but quality, you should know that the types of math problems are ever-changing, and you should look for rules. Doing 10 is better than doing 100 randomly. After a week, you have to take out what you learned the week before for a while, and then do one or two exercises (this is to deepen your image and avoid forgetting, which is very important, and forgetting means learning again and wasting time). Repeat it in a few weeks, and your image will be profound. After a long time, you will feel that your math will make great progress. . . . Trust me. . . . .