Well, first of all, it must be explained that generally speaking, the advantage of boys in learning mathematics lies in their active thinking, while the advantage of girls lies in their carefulness, which is not absolute.

Now junior high school mathematics is relatively less difficult, and the learning task is easier than before. There should be no problem of not having time to do more questions, right? ~~

In addition to natural factors, thinking is also cultivated. If you feel that you can't keep up with your thinking, you should practice more. Practice makes perfect! In middle school (junior high school) mathematics, the content and difficulty of the exam will not fluctuate too much when the syllabus changes very little. Usually do more problems and master the routines and methods of solving problems, so there is no difficulty at all.

Be sure to listen to the lecture in class. Don't ignore something just because it's simple. Mathematics learning is very systematic, and teachers always mention the solutions to some common problems when explaining the basic knowledge. You will waste a lot of time if you try to find out these by yourself. (I suffered a big loss in this respect! )

I have been a tutor for middle school students, and the problem of students' carelessness is really troublesome. This problem cannot be solved overnight. We can only form the habit of being careful at ordinary times, and look carefully when we do the questions, and see every word clearly. Stop wasting your time!

I hope these opinions can help you!