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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+2-0!+0 | Kate Ahrens | 7 | Mount Olive Middle School |
| 2^0+0+7 | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 2^0+7-0 | Neal Amos | 10 | Brookstone School |
| (2+7)-(0!+0) | Collin Andrew | 7 | Rohrer G. Middle School |
| 2+7-0!+0 | Janine A. | 6 | Parker Middle School |
| (2+7)-0!-0 | Nick A | 6 | Parkermiddleschool |
| 0!+7+(2x0) | Anton Baker | 6 | John-F-Kennedy School |
| 0!+7+(2x0) | Jerome Bong | 6 | J.F.K. School |
| 7+2^0+0 | Meghan B | 6 | Parker Middle School |
| 7+2-0!+0 | Bob Chen | 8 | Northwest Junior High |
| 7+2-0!+0 | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 2^0+7-0 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 7+2^0+0 | David C | 6 | Parker Middle School |
| 7+2-0^0 | Troy C | 6 | Parker Middle School |
| 2^0+0+7 | Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7+0+2-(0!) | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| 2-0^0+7 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 7+0!+(2x0) | David D | 6 | Parker Middle School |
| 7+2-0^0 | Erica D | 6 | Parker Middle School |
| 2+7-0^0 | Mae D | 6 | Parker Middle School |
| 2-0!+0+7 | Michael Endick | 8 | Foothill Middle School |
| (2-0!+0+7) | Lim Yu Sheng Fabian | 9 | Hwa Chong Institution |
| (2^0)!+7+0 | Carson Farley | 9 | Brookstone School |
| 2^0+7+0 | Tim Freborg | 7 | Hudson Montessori |
| 7-0!+2+0 | Sam F | 6 | Parker Middle School |
| 2^0+0+7 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 7+2^0+0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 2^0+7+0 | Aly G. | 6 | Parker Middle School |
| 7+2^0+0 | Claudia G | 6 | Parker Middle School |
| 7+2^0+0 | James G | 6 | Parker Middle School |
| 2^0+7+0 | J.D. G | 6 | Parker Middle School |
| 2^0+7+0 | Maggie G. | 6 | Parker Middle School |
| 20^0+7 | Wu Zi Hao | 9 | Hwachong Institution |
| 7+2-(0^0) | Nicholas Heng | 8 | Hwa Chong Institution |
| (2^0)+7+0 | Yeo Si Heng | 1 | Hwa Chong Instituition |
| (7+0!)-2x0 | Angelina Hintze | 6 | John F. Kennedy School |
| (7x2^0)+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 | Matt H | 6 | Parker Middle School |
| 7+0!+(2x0) | Olivia H | 6 | Parker Middle School |
| 2^0+7+0 | Peter H | 6 | Parker Middle School |
| (7-0!)+(2+0) | Karen Israel | 7 | Roher Ms |
| 7+2-0!+0 | Lee Zi Jian | 8 | Hwa Chong Instituition |
| 7+2-0-0! | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 7+(2^0)+0 | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 7+2-0-0! | Ng Xu Jie | 8 | Hwa Chong Institution |
| 7+0+2^0 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 2^0+7+0 | Marcus Phoa Junxiong | 9 | Hwa Chong Institution (High School) |
| 0*2+0!+7 | Tan Song Kai | 8 | Hwa Chong Institution |
| (2x0)+7+0! | Olivia Kamensky | 8 | Brookstone School |
| 7+(0!)+2x0 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7+2-0-0! | Delwin Koh | 8 | Hwa Chong Institution |
| 7+2-0^0 | Geena K. | 6 | Parker Middle School |
| 7+0!-0^2 | Gannon Lavins | 7 | Hudson Montessori School |
| 2^0+0+7 7-0^0+2 0/2+7+0! 2/(0!)+7-0! |
Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| 2^0+0+7 | Benjamin Low | 8 | Hwa Chong Institution |
| 7+(2-0^0) | Amanda L. | 6 | Parker Middle School |
| (2-0!)+(0+7) | Tori Mcerlean | 7 | Rohrer Middle School |
| 7+0!+(0*2) | Kelley Mcintire | 9 | Brookstone |
| 7+2-0!+0 | Ella Medicus | 8 | Hudson Montessori School |
| 7+0!+(2x0) | Connor M. | 6 | Parker |
| 7+2-0!-0 | Jessica M | 7 | Mount Olive Middle School |
| 7+2-0!+0 | Kelsey M | 6 | Parker Middle School |
| 7+2-0!-0 | Kevin M | 6 | Parker Middle School |
| 7-0^0+2 | Margaret M. | 6 | Parker Middle School |
| 7+2-0^0 | Monie M | 6 | Parker Middle School |
| 2^0+7+0 | Natalie M. | 6 | Parker Middle School |
| 2^0+7+0 | Olivia M | 6 | Parker Middle School |
| 7+2^0!-0! | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 7+2^0+0 | Yuxiao Ning | 12 | Hoboken High School |
| 7+2-0!+0 | Cam O | 6 | Parker Middle School |
| 7+2+0-0! | Em O | 6 | Parker Middle School |
| 7+0!-0*2 | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 7+2-0!-0 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| (7+2)-(0!+0) | Erick Rodgers | 7 | Rohrer Ms |
| 7+2-0!+0 | Adam Roenberg | 7 | Hudson Montessori School |
| 7+0+2^0 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 7+2-0!-0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 2+7-0!-0 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 7+0+2^0 | Nayan Shah | 8 | Hudson Montessori School |
| 2^(0x0)+7 | Ethan Swan | 8 | Christ The Divine Teacher School |
| 7+2^0+0 | Bobby S | 6 | Parker Middle School |
| (7+2^0)+0 | Dylan S. | 6 | Parker Middle School |
| 7+2-0^0 | Katie S | 6 | Parker Middle School |
| 7+2-0^0 | Meghan S. | 6 | Parker Middle School |
| 7+2-0^0 | Jon Tan | 8 | Hwachong Institution |
| 20^0+7 | Chong Tjen-Yao | 7 | Hwa Chong Institution |
| 2x0+0!+7 | Darren Toh | 9 | Hwa Chong Institution |
| (2^0)-0+7 | Ng Jian Tong | 9 | Hwa Chong Institution |
| (7+0) +2^0 | Henry Trimpe | 1 | Hudson Montessori School |
| 7+2-0^0 | Anna T. | 6 | Parker Middle School |
| 7+2^0+0 | Scott T | 6 | Parker Middle School |
| 2^0 +0+7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 7+2-0!+0 7+0+2^0 sqrt(2^(7-0!))-0 |
Chong Zhi Wei | 7 | Hwachong Institution |
| 7+2^0+0 | Kenneth Ng Yu Wei | 7 | Hwa Chong Institution |
| 7+2^0+0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 2^0+0+7 | Han Xiaoxiao | 9 | Hwa Chong Institution |
| 2^0+0+7 | Lim Han Xin | 7 | Hci |
| 2-0!+0+7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 2^0+0+7 | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 2^0+0+7 | Loh Jun Yan | 3 | Hwa Chong Institution (High School Section) |
| (7+0!)+(2x0) | Lee Jun Yi | 8 | Hwa Chong Institution |
| 20^0+7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 7+2^0+0 | Zhou Yifan | 3 | Hwa Chong Institution |
| 2^0+0+7 | Zou Xiang Yu | 7 | Hwa Chong |
| 7+2-(0!)-0 | Xiao Yuting | 8 | Hwa Chong Institution |
| 7+0+(2^0) | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 2^0+0+7 | Yu Zhou | 1 | Hwa Chong Institution |
| 7+(2^0)-0 | Andre | 8 | St. Gabes |
| (2-0^0)+7 | Anthony | 6 | Parker |
| 2x0+(7+0!) | Chrissa | 6 | John F. Kennedy School |
| 2^0+7-0 | Jared | 6 | Parker Middle School |
| 2^(0+0)+7 | NergüL | 10 | ÖZel Fatih Sultan Lisesi |
| (2*0)+7+0! | Steven | 6 | Christ The Divine Techer School |
| 2x0+0!+7 | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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