The purpose of learning mathematics is to apply mathematics to practical problems. Mathematics is an abstract subject, which provides tools and methods for analyzing and solving problems. By studying mathematics, we can cultivate logical thinking, analyze problems and solve various mathematical problems in real life. Mathematics is widely used in science, engineering, economy, computer science and other fields, which can help us understand the laws of nature, optimize the production and management process, and solve complex calculation problems. In addition, mathematics has also cultivated our abstract thinking and reasoning ability, and improved our problem-solving ability and innovation ability.