本书严格遵循现行小学数学课程标准精心编纂，巧妙运用引人入胜的故事情节作为知识载体，将抽象的小学数学概念与原理生动展现。通过细致入微的知识点讲解，结合精心设计的动脑思考题与动手实践环节，不仅激发了学生的学习兴趣，更培养了他们的主动探索精神。书中穿插典型例题及其变形题目，辅以深入浅出的解析，鼓励学生触类旁通，深化对数学知识的理解与应用能力。此选题特别注重数学思维的磨砺与拓展，引领学生窥见数学之美，探索其背后的逻辑与奥秘，为学生拓宽视野、丰富知识底蕴奠定坚实基础。

第1 讲 加减速算·········································.1
第2 讲 乘法速算·········································.6
第3 讲 乘除速算·········································11
第4 讲 配对求和·········································15
第5 讲 巧填乘法竖式···································20
第6 讲 巧填除法竖式···································26
第7 讲 有余数的除法···································33
第8 讲 错中求解·········································38
第9 讲 数字谜（1）·····································43
第10 讲 数字谜（2） ···································48
第11 讲 按规律填数·····································53
第12 讲 按规律填图·····································57
第13 讲 时间问题········································63
第14 讲 数线段···········································67
第15 讲 巧求周长········································72
第16 讲 巧求面积········································77
第17 讲 周期问题········································83
第18 讲 重叠问题········································88
第19 讲 等量代换········································93
第20 讲 假设法解题·····································98
第21 讲 旅游中的数学·······························.102
第22 讲 和倍问题·····································.111
第23 讲 差倍问题·····································.116
第24 讲 和差问题·····································.120
第25 讲 还原问题·····································.125
第26 讲 盈亏问题·····································.130
第27 讲 年龄问题·····································.135
第28 讲 简单枚举·····································.140
第29 讲 幻方和数阵··································.144
第30 讲 统筹方法·····································.152