Generally speaking, math 1 is a subject with high requirements for math, math 2 is generally chemical engineering, and math 3 is economic management.
Among them, math 1 has the most content and is difficult. Math 1 is the most difficult, followed by Math 2 and Math 3, and science and engineering have the lowest score every year. You can imagine.
If you want to review, it depends on your foundation. The school should always give the exam bibliography, and just review it according to that. In mathematics, Li Yongle's review books are generally used, with all the knowledge points and good topics. Basically, it is enough to have this book and the real questions of previous years.
Of course, if your foundation is not very good, you may need textbooks.