目 

录

第一章　有理数

1.1　正数和负数.......................................................................................................1

1.2　有理数...............................................................................................................6

1.3　有理数的加减法.............................................................................................29

1.4　有理数的乘除法.............................................................................................43

1.5　有理数的乘方.................................................................................................64

小结与复习..............................................................................................................85

第二章　整式的加减

2.1　整式 ................................................................................................................89

2.2　整式的加减...................................................................................................108

2.3　探索与表达规律...........................................................................................127

小结与复习............................................................................................................143

第三章　一元一次方程

3.1　从算式到方程...............................................................................................145

3.2　解一元一次方程（一）：合并同类项与移项...........................................158

3.3　 解一元一次方程（二）：去括号与去分母...............................................167

3.4　实际问题与一元一次方程...........................................................................181

小结与复习............................................................................................................221

第四章　几何图形初步

4.1　几何图形.......................................................................................................224

4.2　直线、射线、线段.......................................................................................242

4.3　角...................................................................................................................262

小结与复习............................................................................................................284