有理数知识点目录一、正数和负数..............................................................................................................................2考向1：正数和负数的概念....................................................................................................2考向2：正数和负数的相反意义............................................................................................2二、有理数......................................................................................................................................3考向3：有理数的分类............................................................................................................3三、数轴..........................................................................................................................................4考向4：数轴的定义................................................................................................................5考向5：利用数轴比较两数的大小........................................................................................5四、相反数......................................................................................................................................6考向6：相反数........................................................................................................................6五、绝对值......................................................................................................................................6考向7：求一个数的绝对值....................................................................................................7考向8：有理数的大小比较....................................................................................................7六、有理数的加法..........................................................................................................................9考向9：有理数的加法............................................................................................................9七、有理数的减法........................................................................................................................10考向10：有理数的减法........................................................................................................10八、有理数的乘法........................................................................................................................12考向11：有理数的乘法........................................................................................................12九、有理数的除法........................................................................................................................14考向12：有理数的除法........................................................................................................14十、乘方........................................................................................................................................16考向13：乘方的运算............................................................................................................16十一、有理数的混合运算............................................................................................................18十二、科学计数法...............................................................................................................
