目录第1讲整数计算综合.........................................................................................................................................1第2讲和差倍问题（三）.........................................................................................................................................9内容概述..........................................................................................................................................................................9典型问题..........................................................................................................................................................................9第3讲还原问题与年龄问题....................................................................................................................................17内容概述........................................................................................................................................................................17典型问题........................................................................................................................................................................17第4讲数阵图初步.......................................................................................................................................24内容概述........................................................................................................................................................................24典型问题........................................................................................................................................................................24第5讲竖式问题.......................................................................................................................................32内容概述........................................................................................................................................................................32典型问题........................................................................................................................................................................32第6讲行程问题一.......................................................................................................................................40内容概述........................................................................................................................................................................40典型问题........................................................................................................................................................................40(1)甲从A走到B需要多长时间？............................................................................................................................41(2)两个人从出发到相遇需要多长时间？................................................................................................................41第7讲直线形计算一.......................................................................................................................................48内容概述........................................................................................................................................................................48典型问题........................................................................................................................................................................48第8讲抽屉原理一.......................................................................................................................................57内容概述........................................................................................................................................................................57典型问题........................................................................................................................................................................58第9讲多位数与小数.......................................................................................................................................65第10讲平均数问题.......................................................................................................................................72内容概述........................................................................................................................................................................72典型问题........................................................................................................................................................................72第11讲几何图形剪拼.......................................................................................................................................80内容概述........................................................................................................................................................................80典型问题.........................................................................................................................................................