Generally, some exercise books on the market basically have many ideas for solving problems, and it is basically impossible to have detailed calculation steps, because the foundation of primary school and junior high school has been laid for so many years before the second year of high school, so there will be no detailed steps.

Personally recommend "three-year simulated five-year college entrance examination". An answer has a detailed solution idea and a common formula table. The other book was written in a systematic way. First, a list of knowledge to help you review your knowledge, then examples, and then some college entrance examination questions, which are also very good for review.

If you want to improve, you can use the century gold list. The topic will be slightly more difficult, and it is basically a superposition of easy to difficult. You might as well try.

PS: I don't know if it's true that five points can be admitted upstairs, but in Guangzhou, there are more and more art students, and the competition is naturally great. Although art students have low requirements for cultural achievements, they still have to learn mathematics well to be competitive.

As for the problem of poor LL calculation, I personally don't think it can be solved by buying a book with detailed calculation steps. The key is that LL will review after the calculation. If the foundation is poor, don't jump. If you forget some basic formulas (such as factorization, radical, complete square, Vieta's theorem), you might as well write them down. If you meet them again, you will get better slowly. Besides, if you make a mistake, don't just write the answer. You have to do it again, find out where you are wrong, do it again every once in a while, and see if you really have mastered it, so you don't have to look at the questions again.