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有理数的概念与运算是是初中数学中的基本概念和基础运算,既是初中数学学习的重点内容,又是刚进入初中的学生的学习难点所在.能否顺利完成初中阶段的数学学习,与有理数概念的透彻理解和有理数运算的熟练掌握息息相关.因此,学习中对本章的基本概念和运算应予以足够的重视,否则将
The concept and operation of rational numbers are basic concepts and basic operations in junior high school mathematics. They are not only the key content of junior high school mathematics learning, but also the difficulty for students who have just entered junior high school. Whether they can successfully complete the mathematics study in junior high school, and the concept of rational numbers The thorough understanding and the mastery of rational number operations are closely related. Therefore, the basic concepts and operations in this chapter should be given sufficient attention in learning, otherwise