目录第一讲四则运算（一）.......................................................................................................................................................1第二讲基本应用题................................................................................................................................................................8第三讲和差倍问题一.........................................................................................................................................................15第四讲枚举法一..................................................................................................................................................................23第五讲找规律.....................................................................................................................................................................32第六讲简单加减法竖式......................................................................................................................................................39第七讲周期问题..................................................................................................................................................................47第八讲智巧趣题一..............................................................................................................................................................56第九讲四则运算二..............................................................................................................................................................68第十讲和差倍问题二..........................................................................................................................................................74第十一讲鸡兔同笼问题一..................................................................................................................................................81第十二讲枚举法二..............................................................................................................................................................88第十三讲等差数列.............................................................................................................................................................96第14讲几何图形的认知.................................................................................................................................................102第十五讲盈亏问题一..........................................................................................................................................................112第十六讲智巧趣题二..........................................................................................................................................................118第十七讲四则运算三..........................................................................................................................................................128第十八讲简单乘除法竖式..................................................................................................................................................134第十九讲鸡兔同笼问题二..................................................................................................................................................142第二十讲算符与数字..........................................................................................................................................................148第二十一讲间隔与阵列......................................................................................................................................................154第二十二讲长度与角度的计算..........................................................................................................................................160第二十三讲盈亏问题二......................................................................................................................................................169答案部分..............................................................................................................................................................................177第一讲四则运算一...........................................................................................................................................................177第二讲基本应用题............................................................................................................................................................179第三讲和差倍问题一.......................................................................................................................................................181第四讲枚举法一................................................................................................................................................................183第五讲找规律...................................................................................................................................................................185第六讲简单加减法竖式....................................................................................................................................................187第七讲周期问题.....................