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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 |
| (2+0!)!x(0+7) | Chua Cheng Aik | 9 | Hwa Chong Institution |
| (2+0!)!x7+0 | Neal Amos | 10 | Brookstone School |
| (2+0!)!*7-0 | Bob Chen | 8 | Northwest Junior High |
| ((2+0!)!*7)-0 | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 7x(2+0!)!+0 | Paxton Chia | 8 | Hwachong Institution |
| ((2+0!)!x7)/0!
(2+0!)!x(0+7) |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| (2+0!)!x7+0 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| (2+0!+0)!*7 | Michael Endick | 8 | Foothill Middle School |
| (2+0^0)!x7 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| (2+0!)!x7+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 |
| (2+0!)!*7+0 | Lee Zi Jian | 8 | Hwa Chong Instituition |
| (2+0!)!x7+0 | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| (2+0!)!*7-0 | Ng Xu Jie | 8 | Hwa Chong Institution |
| (2+0!)!*7+0 | Tan Song Kai | 8 | Hwa Chong Institution |
| 7x(0!+2)!-0 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| (2+0!)!*7-0 | Delwin Koh | 8 | Hwa Chong Institution |
| (2+0!)!*7-0 | Benjamin Low | 8 | Hwa Chong Institution |
| (2+0!)!*7-0 | Yuxiao Ning | 12 | Hoboken High School |
| ((2+0!)!)*7*0! | Ow Zhen Quan | 8 | Hwa Chong Institution |
| (2+0!)!x7+0 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| ((2+0!)!x7)-0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| (2+0!-0)!x7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| (2+0!)!*7+0 | Chong Zhi Wei | 7 | Hwachong Institution |
| (2+0!)!x7-0 | Lim Han Xin | 7 | Hci |
| (2+0!+0)!x7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| (2+0!)!x7-0 | Lee Jun Yi | 8 | Hwa Chong Institution |
| (2+0!+0)!*7 | Low Kah Yi | 9 | Hwa Chong Institution |
| (2+0!)!x7+0 | Zhou Yifan | 3 | Hwa Chong Institution |
| {[2+(0!)]!}x7-0 | Xiao Yuting | 8 | Hwa Chong Institution |
| [[2+(0!)]!]*7+0 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
Please notify Judy Ann Brown of any errors.
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