According to your formulation: accurate calculation and improving math scores should refer to seeking learning methods in ordinary middle schools, so it is very simple-practice makes perfect. Just be the sea. There are too many questions. It's really that his tail is up and I know what he wants. As for the formula or some commonly used data, such as the square number of 1 1 ~ 19, there is no need to memorize it deliberately. Do more questions and you will remember them naturally.
And if you want to ask about the learning methods of Olympic Mathematics or mathematics above college level, I can say that diligence is of course important, but I think talent is also very important to a great extent. Mathematics is really beyond the reach of ordinary people.
Finally, as an old saying goes, attitude is everything. If you don't want to study by yourself, it's no use asking Hua to be a tutor.