包邮奇妙的小学数学(六年级)

第1 讲 分数的简便运算（1）·························.1
第2 讲 分数的简便运算（2）·························.4
第3 讲 巧比分数的大小································.8
第4 讲 定义新运算······································11
第5 讲 转化单位“1”··································15
第6 讲 找不变量·········································19
第7 讲 按比例分配······································23
第8 讲 比的应用·········································27
第9 讲 列方程解题······································31
第10 讲 倒推法解题·····································35
第11 讲 假设法解题·····································40
第12 讲 浓度问题········································45
第13 讲 利润问题········································49
第14 讲 打折问题········································53
第15 讲 圆的周长········································57
第16 讲 圆的面积（1） ································62
第17 讲 圆的面积（2） ································68
第18 讲 圆柱的表面积··································73
第19 讲 圆柱的体积·····································77
第20 讲 圆锥的体积·····································82
第21 讲 行程问题（1） ································86
第22 讲 行程问题（2） ································90
第23 讲 钟面行程········································94
第24 讲 工程问题（1） ································98
第25 讲 工程问题（2） ·····························.102
第26 讲 加法、乘法原理····························.106
第27 讲 数形结合·····································.111
第28 讲 抽屉原理·····································.117
第29 讲 逻辑推理·····································.121
第30 讲 对策问题·····································.126