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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 |
| (7-0!-0!)^2 | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 27-0!-0! | Neal Amos | 10 | Brookstone School |
| 27-0!+0! | Janine A. | 6 | Parker Middle School |
| 27-0!-0! | Brandon Cepas | 7 | Rohrer Ms |
| 27-0!-0! | Bob Chen | 8 | Northwest Junior High |
| 27-0!-0! | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| (7-2-(0!))!+(0!) | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| 27-0!-0! | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 0!+((0!+7)/2)! | Michael Endick | 8 | Foothill Middle School |
| (7-2-0!)!+0! | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| (7-2-0!)!+0! | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 27-0!-0! | Jan Eric Hellenbrand | 6 | John-F.-Kennedy |
| 27-0!-0! | Yeo Si Heng | 8 | Hwa Chong Instituition |
| 27-0!-0! | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 27-0!-0! | Matt H | 6 | Parker Middle School |
| (7-2-0!)!+0! | Lee Zi Jian | 1 | Hwa Chong Instituition |
| 27-(0!+0!) | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 27-0!-0! | Ng Xu Jie | 8 | Hwa Chong Institution |
| (7-0!-0!)^2 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| (7-2-0!)!+0! | Tan Song Kai | 8 | Hwa Chong Institution |
| 20+7-0!-0! | Olivia Kamensky | 8 | Brookstone School |
| (7-2)^(0!+0!) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 27-(0!+0!) | Delwin Koh | 8 | Hwa Chong Institution |
| 27-0!-0! | Michelle Kozak | 7 | Mount Olive Middle School |
| (7-2)^(0!+0!) | Benjamin Low | 8 | Hwa Chong Institution |
| 27-0!-0! | Chris Mulroy | 7 | Rohrer Ms |
| 27-0!-0! | Jessica M | 7 | Mount Olive Middle School |
| 27-(0!+0!) | Margaret M. | 6 | Parker Middle School |
| 27-0!-0! | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 27-0!-0! | Yuxiao Ning | 12 | Hoboken High School |
| (7-2-0!)!+0! | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 27-0!-0! | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 27-0!-0! | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| (7-2-0!)!+0! | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 27-0!-0! | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 27 - 0! - 0! | Nayan Shah | 8 | Hudson Montessori School |
| (7-2-0!)!+0! | Chong Tjen-Yao | 7 | Hwa Chong Institution |
| 27 - 0! - 0! | Elizabeth Wargo | 8 | Hudson Montessori School |
| (7-0!-0!)^2 | Ang Chong Wei | 9 | Hwa Chong Institution |
| (7-2-0!)!+0! | Chong Zhi Wei | 7 | Hwa Chong Insitution |
| 27-0!-0! | Tan Yi Wei | 7 | Hwa Chong Institution |
| 27-0!-0! | Jerrold Au Ying Xian | 9 | Hwa Chong Institution |
| (7-0!-0!)^2 | Lim Han Xin | 7 | Hci |
| (7-0!-0!)^2 | Shaun Lum Yu Xuan | 3 | 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 |
| 27-0!-0! | Zhou Yifan | 3 | Hwa Chong Institution |
| (7-2-0!)!+0! | Zou Xiang Yu | 7 | Hwa Chong Institution |
| [7-(0!)-(0!)]^2 | Xiao Yuting | 8 | Hwa Chong Institution |
| 27-(0!)-(0!) | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| (7-0!-0!)^2 | Yu Zhou | 1 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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