As far as my feeling is concerned, the most useful thing is reading textbooks. Don't let go of the details, especially the examples in books. Be sure to understand them thoroughly. Then do the after-school questions first, pay attention to understanding, and the general exam questions are derived from the topics in the book.
If you want to pass the math exam, you must practice more. I think Tian xing's teaching assistant is good.
In the past, I always promised to set a set of questions every day, but I think it is better to quality before quantity.