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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!)x(2+0!) | Kate Ahrens | 7 | Mount Olive Middle School |
| (7-2-0!)!-0 | Chua Cheng Aik | 9 | Hwa Chong Institution |
| (7+0!)x(2+0!) | Neal Amos | 10 | Brookstone School |
| (7+0!)*(2+0!) | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| (7+0!)*(2+0!) | Kelly Clark | 7 | Rohrer Middle School |
| (-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 |
| (0!+0+Sqrt(2+7))! | Michael Endick | 8 | Foothill Middle School |
| (2+0!)(0!+7) | Lim Yu Sheng Fabian | 9 | Hwa Chong Institution |
| (7-2-0^0)! | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| (7-2-0!)!+0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| (-2+0-0!+7)! | Wu Zi Hao | 9 | Hwachong Institution |
| ((7-2-(0^0))! | Nicholas Heng | 8 | Hwa Chong Institution |
| (7+0!)(2+0!) | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| (2+0!)(0!+7) | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| (7-2-0!)!+0 | Lee Zi Jian | 8 | Hwa Chong Instituition |
| (7+0!)x(2+0!) | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| (7+0!)*(2+0!) | Ng Xu Jie | 8 | Hwa Chong Institution |
| (7-0!-2)!+0 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| (7-2-0!)!+0
(7+0!)x(2+0!) |
Tan Song Kai | 8 | Hwa Chong Institution |
| (7+0!)x(2+0!) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| (7+0!)*(2+0!) | Delwin Koh | 8 | Hwa Chong Institution |
| (2+0!)*(0!+7) | Benjamin Low | 8 | Hwa Chong Institution |
| (0!+2)x(7+0!) | Sammy Mayall | 6 | Viewpoint |
| (0!+7)(0!+2) | Kelley Mcintire | 9 | Brookstone |
| (2+0!)*(7+0!) | Jessica M | 7 | Mount Olive Middle School |
| (7+0!)x(2+0!) | Margaret M. | 6 | Parker Middle School |
| (7+0!)x(2+0!) | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| ((7+0!)/2)!-0 | Yuxiao Ning | 12 | Hoboken High School |
| (7-2-0^0)! | Jesse P | 6 | Parker Middle School |
| (7-2-0!)!+0 | Ow Zhen Quan | 8 | Hwa Chong Institution |
| (2+0!)x(7+0!) | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| (7-2-0!)!+0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| (7 + 0!)(2 + 0!) | Nayan Shah | 8 | Hudson Montessori School |
| (7-2-0!-0)! | Chong Tjen-Yao | 7 | Hwa Chong Institution |
| (2 + 0! ) (7 + 0!) | Elizabeth Wargo | 8 | Hudson Montessori School |
| (2+0!)x(0!+7) | Ang Chong Wei | 9 | Hwa Chong Institution |
| (7-2-0!)!-0 | Chong Zhi Wei | 7 | Hwa Chong Insitution |
| (2+7^0+0!)! | Tan Yi Wei | 7 | Hwa Chong Institution |
| (2+0!)x(7+0!) | Lim Han Xin | 7 | Hci |
| (2+0!)(0!+7) | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| (2+0!)(0!+7) | Loh Jun Yan | 3 | Hwa Chong Institution (High School Section) |
| (7-2-0!)!-0 | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| (-2+0-0!+7)! | Low Kah Yi | 9 | Hwa Chong Institution |
| (7^0+2+0!)! | Zhou Yifan | 3 | Hwa Chong Institution |
| (7-2-0!)!+0 | Lee Jun Yi | 8 | Hwa Chong Institution |
| {[7-2-(0!)]!}+0 | Xiao Yuting | 8 | Hwa Chong Institution |
| [[7-2-(0!)]!]+0 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| (7-2-0^0)! | Yu Zhou | 1 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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