As a key subject, mathematics is very important to improve students' problem-solving ability. The core accomplishment of primary school mathematics is a basic and key accomplishment in teaching, and plays a decisive role in mathematics. In order to make students more profoundly understand and grasp the elementary school mathematics knowledge, and to lay a solid mathematical foundation, teaching teachers should pay attention to the core of the literacy of students, attach importance to the development of students' thinking ability, improve students ability to solve practical problems, guides the student to have further understanding of mathematics, and enhance the students' mathematical ability, improve the whole quality of students, and promote the comprehensive development.