第1页共168页目录封面...........................................................................................................................................2版权页.......................................................................................................................................3编写人员...................................................................................................................................4主编的话...................................................................................................................................5本册导引...................................................................................................................................7目录...........................................................................................................................................9第一章有理数.............................................................................................................................111.1正数和负数....................................................................................................................12阅读与思考用正负数表示加工允许误差.........................................................................161.2有理数............................................................................................................................171.3有理数的加减法............................................................................................................26实验与探究填幻方.............................................................................................................30阅读与思考中国人最先使用负数.....................................................................................371.4有理数的乘除法............................................................................................................38观察与猜想翻牌游戏中的数学道理.................................................................................501.5有理...
