Not difficult. Senior high school mathematics is two different realms of junior high school mathematics. The difficulty of the math exam at the end of senior one should be above average, and all of them are basic knowledge, which is not difficult. Of course, excellent students in school can try to do more math problems. Mathematics in senior one refers to the mathematics learned in senior one, and the knowledge of mathematics in senior one is more, and the examination questions in senior one account for about 60% of the college entrance examination scores. You have to study five books in a school year. As long as you have a solid grasp of the mathematics in Grade One, Grade Two and Grade Three are only the review and supplement of Grade One.