练习是学习者对学习任务的重复接触和重复反应.小学生要掌握好数学中的概念、性质、法则、公式等基础知识,形成正确、迅速、合理、灵活的计算技能,培养初步的逻辑思维能力、空间观念和解决简单实际问题的能力,需要对学习内容重复接触和强化训练,也需要教师在教学活动中贯彻“以训练为主线”的现代教学思想,有效地组织练习. Exercises are the repeated contacts and repetitive reactions of learners to learning tasks.Plummaries should master the basic concepts of concepts, properties, rules and formulas in mathematics so as to form correct, rapid, reasonable and flexible computational skills and cultivate preliminary logical thinking skills , Space concepts and the ability to solve simple practical problems, it is necessary to repeat contact and intensive training on the learning content. Teachers also need to implement the modern teaching philosophy of “training as the main line” in teaching activities and organize exercises effectively.