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This Web page is intended to record solutions submitted by students in
grades three through twelve.
Submissions will be posted starting February 1, 2007.
Rules: use the digits in the year 2007 and the operations of +, -, x, ÷, sqrt (square root), ^ (raise to a power), and ! (factorial), along with grouping symbols, to write expressions for the counting numbers 1 through 100. Please read and follow the rules carefully. Teachers may print out worksheets for students to record their findings, or print sheets of manipulatives for students to use.
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| Solution | Name | Grade | School |
| 7+2+0!+0! | Kate Ahrens | 7 | Mount Olive Middle School |
| 2+0!+0!+7 | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 2+7+0!+0! | Neal Amos | 10 | Brookstone School |
| (7+2)+(0!+0!) | Janine A. | 6 | Parker Middle School |
| 2+7+0!+0! | Anton Baker | 6 | John-F-Kennedy School |
| (7-0!)x2-0! | George Bret | 9 | Christian High School |
| 7+2+0!+0! | Justen B | 6 | Parker Middle School |
| 7+2+0!+0! | Bob Chen | 8 | Northwest Junior High |
| 7+2+0!+0! | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 2+0!+0!+7 | Paxton Chia | 8 | Hwachong Institution |
| 0!+0!+2+7 | Hunter Ciuba | 8 | Brookstone |
| 2+0!+0!+7 2(0!+0!)+7 |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7+2+(0!+0!) | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| 7+2+0!+0! | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 7+2+0!+0! | David D | 6 | Parker Middle School |
| 2+7+0!+0! | Mae D | 6 | Parker Middle School |
| 2+0!+0!+7 | Michael Endick | 8 | Foothill Middle School |
| 7+2+0!+0! | Sophie Farah | 8 | Hudson Montessori Middle School |
| 7+2+0!+0! | Tim Freborg | 7 | Hudson Montessori |
| 2+7+0!+0! | Sam F | 6 | Parker Middle School |
| 2+7+0!+0! | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 7+2+(0!)+(0!) | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 2+7+0!+0! | Aly G. | 6 | Parker Middle Shcool |
| 2+0!+0!+7 | Wu Zi Hao | 9 | Hwachong Institution |
| 7+0!+0!+2 | Nicholas Heng | 8 | Hwa Chong Institution |
| 2+7+0!+0! | Yeo Si Heng | 8 | Hwa Chong Instituition |
| (7+2)+0!+0! | Angelina Hintze | 6 | John F. Kennedy School |
| 2+0!+0!+7 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 2+0!+0!+7 | Clark Hudnall | 9 | Alamo Heights High School |
| 2+0!+0!+7 | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 0!+0!+2+7 | Olivia H | 6 | Parker Middle School |
| 7+2+0!+0! | Lee Zi Jian | 8 | Hwa Chong Instituion |
| 7+2+0!+0! | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 7+0!+2!+0! | Ng Xu Jie | 8 | Hwa Chong Institution |
| 7+2+0!+0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 7+2+0!+0! | Tim J. | 6 | Parker Middle School |
| 7+2+0!+0! | Tan Song Kai | 8 | Hwa Chong Institution |
| 0!+0!+7+2 | Olivia Kamensky | 8 | Brookstone School |
| 7+2+(0!)+(0!) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7+2+0!+0! | Delwin Koh | 8 | Hwa Chong Institution |
| 7+0!+2+0! | Chris Langum | 7 | Rohrer Ms |
| 7+2+0!+0! | Gannon Lavins | 7 | Hudson Montessori School |
| 7+2+0!+0! | Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| (2!+0!+0!)+7 | Benjamin Low | 8 | Hwa Chong Institution |
| 2+7+0!+0! | William Mathews | 6 | John F. Kenedy School |
| 2!+7+0!+0! | Kelley Mcintire | 9 | Brookstone |
| 7+2+0!+0! | Connor M. | 6 | Parker |
| 7+2+0!+0! | Jessica M | 7 | Mount Olive Middle School |
| 2+7+0!+0! | Margaret M. | 6 | Parker Middle School |
| 2+7+0!+0! | Olivia M | 6 | Parker Middle School |
| 7+0!+2-0! | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 2+7+0!+0! | Yuxiao Ning | 12 | Hoboken High School |
| 7+2+0!+0! | Cam O | 6 | Parker Middle School |
| 7+2+0!+0! | Emily O | 6 | Parker Middle School |
| 7+2+0!+0! | Vanessa O'c | 6 | Parker Middle School |
| 2+0!+0!+7 | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 7+0!+0!+2 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 7+2+0!+0! | Adam Roenberg | 7 | Hudson Montessori School |
| 2+0!+0!+7 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 7+2+0!+0! | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 7+2+0!+0! | Brandi Rusk | 7 | Rohrer Middle School |
| 2+7+0!+0! | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 2+0!+7+0! | Nayan Shah | 8 | Hudson Montessori School |
| 2+0!+0!+7 | Darren Toh | 9 | Hwa Chong Institution |
| 7+0!+2+0! | Henry Trimpe | 1 | Hudson Montessori School |
| 0!+7+2+0! | Scott Tully | 6 | Parker Middle School |
| 0!+0!+7+2 | Kathryn V | 6 | Parker Middle School |
| 2+7+0!+0! | Elizabeth Wargo | 8 | Hudson Montessori School |
| 2+0!+0!+7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 7+2+0!+0! | Chong Zhi Wei | 7 | Hwachong Institution |
| 7+2+0!+0! | Tan Yi Wei | 7 | Hwa Chong Institution |
| 2(0!+0!)+7 | Maung Thet Naing Win | 7 | Hwa Chong Institution |
| (0!+0!)*2+7 | Steven Winklosky | 6 | Christ The Divine Techer School |
| 2+0!+0!+7 | Han Xiaoxiao | 9 | Hwa Chong Institution |
| 2+0!+0!+7 | Lim Han Xin | 7 | Hci |
| 2+0!+0!+7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 7+2+0!+0! | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 7+2+0!+0! | Chan Shen Yee | 4 | Hwa Chong Institution |
| 7+2+0!+0! | Lee Jun Yi | 8 | Hwa Chong Institution |
| 2+0!+0!+7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 7+2+0!+0! | Zhou Yifan | 3 | Hwa Chong Institution |
| 2+0!+0!+7 | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 7+2+(0!)+(0!) | Xiao Yuting | 8 | Hwa Chong Institution |
| 2+(0!)+(0!)+7 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 2+7+0!+0! | Yu Zhou | 1 | Hwa Chong Institution |
| 7+2+0!+0! | Chrissa | 6 | John F. Kennedy School |
| 2x(0!+0!)+7 | Limjingxi | 9 | Hwachong Institution |
| 2+0!+0!+7 | NergüL | 10 | ÖZel Fatih Sultan Lisesi |
| 2+0!+0!+7 | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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