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有理数是初中阶段的起始内容,正确理解有理数的基本概念,熟练掌握有理数的运算是学习其它知识的基础．纵观2006年各地市的中考试题,可以看出本章涉及的主要基
Rational numbers are the initial content of junior high school. Understanding the rational concepts of rational numbers and mastering rational numbers are the basis for learning other knowledge. Looking at the examination questions in various cities in 2006, it can be seen that the main topics covered in this chapter