How to say it! Doing it seriously is not a bad thing, because the accuracy of math problems is still very important, but how to improve efficiency on the premise of ensuring accuracy? First of all, I suggest that you classify some important mathematical problems, such as which problems are mainly solved by using the nature of the bisector, which will have the effect of drawing inferences from others and reduce the time you need to find solutions to similar problems; Secondly, you say that you have a good foundation, which is one of your advantages, but you are very clear about the proof and application of every theorem and property in the book. I believe your answer is the same as mine, so I suggest you consolidate it more at ordinary times, because the logical thinking of mathematics is interlinked. You are familiar with the proof process of these theorems and properties, and you can also enhance your thinking ability to solve problems invisibly. Finally, of course you need to practice more. Remember not to do it for the sake of math. 2. What is the core? 3. Are the questions you did before similar to theirs? What are their similarities and differences? You need to take some notes. Of course, it would be better if you kept them all in your mind.
hope this helps