You can't think of the answer to the question within 10 minutes, which means that you are lack of knowledge about this question, and there must be a knowledge blind spot. In this case, even if you think for an hour, you can't have an answer. Analysis is a very important tool, which allows you to quickly understand the problem-solving ideas of this topic in a short time, and also allows you to understand the blind spots of knowledge.

I must make good use of this analytical tool. I actually used this method when I was studying math and science in senior three. When I am doing a lot of questions, it is impossible to ask the teacher all the questions. In this case, analysis is the best tool, which allows me to have a deeper understanding of a topic in a short time without bothering the teacher frequently.

Mark all the knowledge points when doing math problems. In fact, every topic is highlighted by knowledge points. When you do a math problem, you must write all the knowledge points next to the topic. On the one hand, it will deepen your impression of this problem, on the other hand, it will give you a deeper understanding of related knowledge, and it will be easier to mobilize the knowledge points in your brain when you see related topics next time.

Never waste too much time on a topic. I believe that many people will have obsessive-compulsive disorder when they study. If they can't solve a problem in five minutes, they will certainly spend more time on it. It doesn't have to be like this. If you can't think of a topic within 5 minutes, it means that you already lack knowledge in this field, so you must stop here as soon as possible.

In any case, knowledge is very important and you don't need to spend a lot of time on a difficult topic. If you can answer 60% simple questions and 20% moderately difficult questions correctly, you will get 80% marks.