习题是小学数学教学的重要组成部分,是学生学习过程中不可或缺的重要环节,是学生掌握知识、形成技能、发展能力的重要载体,是提高学生运用知识解决简单实际问题能力的有效工具, Exercises are an important part of primary mathematics teaching and are an indispensable link in students ’learning process. They are important carriers for students to master knowledge, form skills and develop their abilities. They are an effective tool to improve students’ abilities of using knowledge to solve simple and practical problems,