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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 |
| 70/2+0 | Neal Amos | 10 | Brookstone School |
| 70/2+0 | Collin Andrew | 7 | Rohrer G. Middle School |
| (70/2)-0 | Jerome Bong | 6 | J.F.K. School |
| 70/2+0 | Gina Bossi | 7 | Rohrer Middle School |
| 70/2+0 | Johnny B. | 6 | Parker Middle School |
| 70/2-0 | Bob Chen | 8 | Northwest Junior High |
| (70/2)-0 | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| (70/2)+0 | Kelly Clark | 7 | Rohrer Middle School |
| ((2+0!)!-0!)x7
70/2+0 |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 70/2+((0!)-(0!)) | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| (7-0!)^2-0! | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 7/0.2+0 | Michael Endick | 8 | Foothill Middle School |
| (70/2)+0 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| (7/.2)+0+0 | Jake Garn | 7 | Rohrer M.S. |
| 7/.2-0-0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| ((2+0!)!-0!)*7 | Wu Zi Hao | 9 | Hwachong Institution |
| (70/2)+0 | Angelina Hintze | 6 | John F. Kennedy School |
| (70 / 2) - 0 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 70/2+0 | Matt H | 6 | Parker Middle School |
| 7/.2-(0+0) | Lee Zi Jian | 8 | Hwa Chong Instituition |
| 70/2+0 | Ng Xu Jie | 8 | Hwa Chong Institution |
| (7-0!)^2-0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 7/.2+0+0 | Song Cheng Jun | 7 | Hwa Chong Instituition |
| (70/2)x0!
70/(0+2) 70/2+0 |
Tan Song Kai | 8 | Hwa Chong Institution |
| (7-0!)^2-0! | Kevin Kasilowski | 7 | Rohrer Ms |
| (70/2)-0 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 70/(0!*2) | Delwin Koh | 8 | Hwa Chong Institution |
| 70/2 + 0
7/0.2 + 0 .7/0.02 |
Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| 70/2+0 | Alexa Lindsay | 7 | Rohrer Middle School |
| 70/2-0 | Benjamin Low | 8 | Hwa Chong Institution |
| 70/2+0 | Hannah Marshall | 7 | M.O.M.S. |
| (70/2)+0 | Tori Mcerlean | 7 | Rohrer Middle School |
| 70/2+0 | Kelley Mcintire | 9 | Brookstone |
| 70/2-0 | Jessica M | 7 | Mount Olive Middle School |
| 70\2+0 | Natalie M. | 6 | Parker Middle School |
| 7x((2+0!)!-0!) | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 70/2+0 | Yuxiao Ning | 12 | Hoboken High School |
| 70/2+0 | Zack O'Connell | 7 | Rohrer Ms |
| 70/2-0+0 | Cam O | 6 | Parker Middle School |
| (70/2)+0 | Robert Parisi | 7 | Mount Olive Middle School |
| (70/2)+0 | Mary Kate Pierson | 7 | Rohrer Middle School |
| 70 / 2+0 | Jesse P | 6 | Parker Middle School |
| 70/2+0 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| (70/2)+0 | Kelly Roche | 7 | Rohrer Ms |
| 70/2+0 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 0 + 70/2 | Avery Sherer | 9 | Brookstone School |
| 70/2+0 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 70/2 + 0 | Nayan Shah | 8 | Hudson Montessori School |
| 70/2+0 | Alivia Spinozzi | 7 | Rorher Middle School |
| 70/2+0 | Katie S | 6 | Parker Middle School |
| 7/0.20 | Andrew Weindel | 7 | Rorer M.S. |
| (7-0!)^2-0! | Tan Yi Wei | 7 | Hwa Chong Institution |
| 70/2+0 | Leah W. | 6 | Parker Middle |
| 70/2-0 | Lim Han Xin | 7 | Hci |
| (((2+0!)!)-0!)x7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 70/2+0 | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| (70/2)+0 | Lee Jun Yi | 8 | Hwa Chong Institution |
| ((2+0!)!-0!)*7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 70/2+0 | Zhou Yifan | 3 | Hwa Chong Institution |
| 70/2-0 | Zou Xiang Yu | 7 | Hwa Chong Institution |
| (70/2)+0 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 70/2-0 | Chrissa | 6 | John F. Kennedy School |
| 70/2.0 | Jared | 6 | Parker Middle School |
Please notify Judy Ann Brown of any errors.
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