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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!+Sqrt(0!+7!) | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 70+(0x2) | Max Yoong Pao Aun | 7 | Hwa Chong Institution |
| 72-0!-0! | Neal Amos | 10 | Brookstone School |
| 72-0!-0! | Gina Bossi | 7 | Rohrer Middle School |
| 70+2*0 | Bob Chen | 8 | Northwest Junior High |
| 72-0!-0! | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 0*2+70 | Eddie Cunningham | 7 | Rohrer MS |
| -2+0!+Sqrt(0!+7!) | Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7*((0!+0!)/.2) | Michael Endick | 8 | Foothill Middle School |
| 70+(2(0)) | Tim Freborg | 7 | Hudson Montessori |
| 70+2x0 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 70-2x0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| -2^0+Sqrt(0!+7!) | Wu Zi Hao | 9 | Hwachong Institution |
| 72-0!-0! | Jan Eric Hellenbrand | 6 | John-.F.-Kennedy |
| 70-2(0) | Nicholas Heng | 8 | Hwa Chong Institution |
| 72-0!-0! | Yeo Si Heng | 8 | Hwa Chong Instituition |
| 70+0x2 | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 70+(2*0) | Anthony Illiano | 7 | Rohrer M.S. |
| 72-0!-0! | Lee Zi Jian | 8 | Hwa Chong Instituition |
| 72-0!-0! | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 72-0!-0! | Ng Xu Jie | 8 | Hwa Chong Institution |
| 72-0!-0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 72-0!-0! | Olivia Kamensky | 8 | Brookstone School |
| 70+(2x0) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 72-0!-0! | Delwin Koh | 8 | Hwa Chong Institution |
| 72-0!-0! | Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| -(2^0)+(Sqrt(0!+7!)) | Benjamin Low | 8 | Hwa Chong Institution |
| 70+(2x0) | Luke Mansour | 9 | Brookstone School |
| 70+0*2 | Hannah Marshall | 7 | M.O.M.S. |
| 70+(0*2) | Kelley Mcintire | 9 | Brookstone |
| 72-0!-0! | Timothy Ng Yi Ming | 8 | Hwa Chong Institution |
| 72-0!-0! | Jessica M | 7 | Mount Olive Middle School |
| 70+2*0 | Yuxiao Ning | 12 | Hoboken High School |
| 72-0!-0! | Cam O | 6 | Parker Middle Shcool |
| 72-0!-0! | Janey Perry | 7 | Rohrer MS |
| 72-(0!+0!) | Mary Kate Pierson | 7 | Rohrer Middle School |
| 70+(2x0) | Jesse P | 6 | Parker Middle School |
| (7/.2)*(0!+0!) | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 70+(2x0) | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 72-(0!+0!) | Erick Rodgers | 7 | Rohrer MS |
| 70+2*0 | Glenn Goh Rongjie | 9 | Hwa Chong Instituition |
| 72-0!-0! | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 2x0+70 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 70+(2*0) | Selena Starbard | 7 | Rohrer M.S. |
| 72-0!-0! | Rachel Stewart | 7 | Mount Olive Middle School |
| 70+0^2 | Katie S | 6 | Parker Middle School |
| 72-0!-0! | Elizabeth Wargo | 8 | Hudson Montessori School |
| 2x0+70 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 72-0!-0! | Chong Zhi Wei | 7 | Hwachong |
| 70-2*0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 72-0!-0! | Jerrold Au Ying Xian | 9 | Hwa Chong Institution |
| 70-(2x0) | Lim Han Xin | 7 | Hci |
| 72-(0!+0!) | Lee Jun Yi | 8 | Hwa Chong Institution |
| -2^0+Sqrt(0!+7!) | Low Kah Yi | 9 | Hwa Chong Institution |
| 70-2x0 | Zhou Yifan | 3 | Hwa Chong Institution |
| 70+0x2 | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 70+(2x0) | Xiao Yuting | 8 | Hwa Chong Institution |
| 70+(2*0) | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 70+0*2 | Yu Zhou | 1 | Hwa Chong Institution |
| 0x2+70 | Chrissa | 6 | John F. Kennedy School |
Please notify Judy Ann Brown of any errors.
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