Workbooks are an effective way to improve students' ability to use knowledge to solve simple practical problems, and also the main way for teachers to understand students' knowledge mastery. High-quality classroom teaching must be based on high practical quality.

Specifically, on the one hand, exercises help students to deepen their understanding of mathematical knowledge, form a good sense of numbers, a scientific way of thinking and a reasonable habit of thinking, understand some important mathematical relations, laws and ways of thinking, and cultivate their initial sense of application and innovative ability; On the other hand, it also helps students acquire the necessary skills, thus laying the foundation and providing support for subsequent study and problem solving.

At the same time, appropriate exercises can also help students build up their confidence in learning, feel the rigor and certainty of mathematics, improve their ability of expression and communication in mathematical language, and then form correct mathematical concepts.