1 Getting Help with Math 在数学学习上寻求帮助 2
2 Visualizing Percentages 设想百分率 4
3 Are We There Yet? 我们到了吗？ 6
4 The Tangram Puzzle 七巧板之谜 8
5 Calculators and Repeating Decimals 计算器与循环小数 10
6 Will Roman Numerals Return? 罗马数字会归来吗？ 12
7 The Digits of Pi π的位数 14
8 "Please Excuse My Dear Aunt Sally" “请原谅我亲爱的莎莉姑妈” 16
9 The Oldest Math Puzzle 早古老的数学谜题 18
10 Four out of Five Doctors Recommend... 五分之四的医生推荐 20
11 Not All Pyramids Are Square 不是所有的锥体都是四棱锥 22
12 Numbers with Personality 具有个性的数字 24
13 The"Right"Angle “正确的”角（直角） 26
14 A Theorem Most Proved 被证明最多次的定理 28
15 Distances and Light Years 距离与光年 30
16 Sherlock Holmes Solves a Math Problem 夏洛克·福尔摩斯解出的一个数学题 32
17 The Fastest Answer 最快的解答 34
18 Proving Fermat's Last Theorem 证明费马最后定理 36
19 Working with Interest Rates 计算利息率 38
20 The Bridges of K？nigsberg 七桥问题 40
21 The Better Buy 更实惠地购物 42
22 Bits and Bytes 位与字节 44
23 Shapes That Cover 覆盖物的形状 46
24 Using Exchange Rates 使用汇率 48
25 Why Equations Don't Have Answers 为何等式没有答案 50
26 How Much Do You Save? 你节省了多少？ 52
27 Beyond the Domino 从多米诺骨牌说开去 54
28 Prime and Composite Numbers 质数与复合数 56
29 Random Numbers 随机数 58
30 "Monday's Child Is Fair of Face" “周一出生的孩子拥有漂亮的脸蛋” 60
31 Making a Budget 做预算 62
32 The Quadragenarian in the Quadrangle 方院中四十多岁的人 64
33 Converting Measurements 度量单位换算 66
34 Storing a Million Dollars at Home 将一百万美金藏在家中 68
35 Patching Things Up with Your Bank 与你的银行达成和解 70
36 Playing Havoc with Generations 混乱的辈份 72
37 If This Is San Francisco,It Must Be Yesterday 如果这里是旧金山，那一定是在昨天 74
38 Working Through a Math Puzzle 解出一道数学谜题 76
39 Happy 22nd Birthday,Great-Great-Uncle Mike! 高曾舅舅迈克，二十二岁生日快乐！ 78
40 Riding the Stock Market Roller Coaster 投资股票市场如坐过山车 80
41 The Binary Number System 二进制数字体系 82
42 Buying and Maintaining an Economy Car 购买和养护一辆经济型车 84
43 Adding 100 Numbers in Minutes 在数分钟内把一百个数字加起来 86
44 George Washington's Birthday 乔治·华盛顿的生日 88
45 Who Drinks Mineral Water? 谁喝矿泉水？ 90
46 Getting out of Credit Card Debt 摆脱信用卡债务 92
47 Thinking in the Metric System 用公制思考 94
48 Winning Combinations 组合中的胜出几率 96
49 What a Coincidence! 真巧！ 98
50 Avoiding Supermarket Booby Traps 避免超市的购物陷阱 100
51 Get Me to the Airport on Time 准时送我到机场 102
52 Brother,Can You Spare $100,000? 兄弟，你拿得出十万美金吗？ 104
53 The Golden Rectangle 黄金矩形 106
54 Double or Nothing 双倍或没有 108
55 Can We Get Rid of Some Zeros? 可以去掉几个零吗？ 110
56 Birthday Twins 同一天生日 112
57 Geometry on the Floor 地板上的几何学 114
58 Good for Nothing? 毫无价值？ 116
59 Two Types of Spirals 两类螺旋形 118
60 Just Like Jack and the Beanstalk 就像杰克和仙豆的故事 120
61 The Toss of a Coin 抛硬币 122
62 Drawing on the Definition 根据定义作图 124
63 Zeno's Paradoxes 芝诺悖论 126
64 A Creative Leap 创造性的飞跃 128
65 What's Rational About That? 那有什么合理的？ 130
66 Precision and Common Sense 精确与常识 132
67 What's It Worth to You? 对你而言其价值有多大？ 134
68 A Visual Illusion 视觉假象 136
69 Equilateral and Equiangular 等边与等角 138
70 Looking Across for Answers 看对角，找答案 140
71 Only Length Times Width? 就是长度乘以宽度吗？ 142
72 Making Patterns with Numbers 用数字构图 144
73 The Impossible Equation 不成立的等式 146
74 Just Rolling Along 向前滚动 148
75 Putting the Pieces Together 拼接 150
答案 152
检测表 155
进展表 158