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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 |
| 0^0+7-2 | Neal Amos | 10 | Brookstone School |
| 7-2^0+0 | Janine A. | 6 | Parker Middle School |
| 7-2+0^0 | Khrysta A-H | 6 | Parker Middle School |
| 7-2+0!+0 | Nick A | 6 | Parkermiddleschool |
| 7-2+0!+0 | Abbie Basso | 7 | Rohrer Middle School |
| (7-2+0!)+0 | Jerome Bong | 6 | J.F.K. School |
| 7-2+0+0! | Bob Chen | 8 | Northwest Junior High |
| 7-(2^0)-0 | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 7-2+0^0 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 7-2+0^0 | Amy C | 6 | Parker Middle School |
| 7-2+0^0 | David C | 6 | Parker Middle School |
| 0^0+7-2 | Ryan C. | 6 | Parker Middle School |
| -2+0!+0+7 7-0!+2x0 |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7^0!-(2-0!) | Erika Grace Davies | 8 | Christ The Divine Teacher |
| (7-2-(0!)-(0!))! | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| 7-2+0^0 7+0-2^0 |
Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 7-0!+(2x0) | David D | 6 | Parker Middle School |
| (7-2)+(0^0) | Julia D. | 6 | Parker Middle School |
| (0+0+Sqrt(2+7))! | Michael Endick | 8 | Foothill Middle School |
| 7-2+0!+0 | Tim Freborg | 7 | Hudson Montessori |
| 7-2+0!+0 | Sam F | 6 | Parker Middle School |
| 7-2+(0!)-0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 7-2+0!+0 | Aly G. | 6 | Parker Middle School |
| 7-2^0+0 | James G | 6 | Parker Middle School |
| 7-2^0+0 | J.D. G | 6 | Parker Middle School |
| 0!+7-2+0 | Maggie G. | 6 | Parker Middle School |
| -20^0+7 | Wu Zi Hao | 9 | Hwachong Institution |
| (7-2)+0!+0 | Jan Eric Hellenbrand | 6 | John-F.-Kennedy |
| 7-2+(0^0) | Nicholas Heng | 8 | Hwa Chong Institution |
| (0+2+7^0)! | Yeo Si Heng | 8 | Hwa Chong Instituition |
| (7-2)+(0!+0) | Emily Himles | 7 | Rohrer Ms |
| (7-2)+0!+0 | Angelina Hintze | 6 | John F. Kennedy School |
| 7-2+0!+0 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 7-0-2^0 | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 0^0+7-2 | Jared H | 6 | Parker Middle School |
| 7-2+0^0 | Matt H | 6 | Parker Middle School |
| 7-2+0^0 | Peter H | 6 | Parker Middle School |
| (7-0!)+0x2 | A.J. I | 6 | Parker Middle School |
| 7-2+0!-0 | Lee Zi Jian | 8 | Hwa Chong Instituition |
| 7-2+0^0 | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 7+(0^0)-2 | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 7-2+0^0 7-2+0+0! |
Ng Xu Jie | 8 | Hwa Chong Institution |
| (7-2-0!-0!)! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 7-2+0+0! | Tim J. | 6 | Parker Middle School |
| 7-2+0!+0 | Olivia Kamensky | 8 | Brookstone School |
| 7-2-0+(0!) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7-2+0^0 | Delwin Koh | 8 | Hwa Chong Institution |
| 7-0!-0^2 | Gannon Lavins | 7 | Hudson Montessori School |
| 7+0^0-2 | Won Cheng Yi Lewis | 1 | Hwa Chong Institution |
| -(2)^0+0+7 | Benjamin Low | 8 | Hwa Chong Institution |
| (7-2)+0^0 | Amanda L. | 6 | Parker Middle School |
| 7-2+0!+0 | Hannah Marshall | 7 | M.O.M.S. |
| 7.0-2^0 | Yeo Soon Kiat Matthew | 9 | Hwa Chong Institution |
| 7-(2-0!+0) | Will Mathews | 6 | John F. Kenedy School |
| 7-2!+0!+0 | Kelley Mcintire | 9 | Brookstone |
| 7-2+0!+0 | Ella Medicus | 8 | Hudson Montessori School |
| 7-2-0+0! | Connor M. | 6 | Parker |
| 7-2+0!+0 | Jessica M | 7 | Mount Olive Middle School |
| ((2+7^0)!)+0 | Margaret M. | 6 | Parker Middle School |
| 7-2+0^0 | Monie M | 6 | Parker Middle School |
| 7-2+0^0 | Natalie M. | 6 | Parker Middle School |
| 7-2+0+0! | Olivia M | 6 | Parker Middle School |
| 7^0!-2+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 | Sio O | 6 | Parker Middle School |
| 7-2+0!+0 | Vanessa O'c | 6 | Parker Middle School |
| 7-0-2^0 | Andy Chan Boon Pang | 8 | Hwa Chong Institution |
| 7-2+0!+0 | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 7-2-0+0! | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 7-0-2^0 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 7-2+0+0! | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 7-2^0+0 | Brooke R | 6 | Parker Middle School |
| 7-2+0!+0 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 7-2+0!-0 | Nayan Shah | 8 | Hudson Montessori School |
| 7-2+0^0 | Rachel Stewart | 7 | Mount Olive Middle School |
| (7-2)+0^0 | Dylan S. | 6 | Parker Middle School |
| 7-0!+0x2 | Kevin S | 6 | Parker Middle School |
| 7-2^0+0 7-2+0^0 |
Jon Tan | 8 | Hwachong Institution |
| (7-0!)!/(0!/.2)! | Chong Tjen-Yao | 7 | Hwa Chong Institution |
| 2x0-0!+7 | Darren Toh | 9 | Hwa Chong Institution |
| 7-2+0^0 | Anna T. | 6 | Parker Middle School |
| (7-2)+0^0 | Scott T | 6 | Parker Middle School |
| 7+0!+0-2 | Kathryn V | 6 | Parker Middle School |
| 2x0-0!+7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 7-0-2+0! | Chong Zhi Wei | 7 | Hwa Chong Insitution |
| 7-2^0+0 | Kenneth Ng Yu Wei | 7 | Hwa Chong Institution |
| 7-2^0-0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 7-2+0!+0 | Ben Wyatt | 9 | Broadland High School |
| (7-2)+0^0 | Abby W. | 6 | Parker Middle School |
| -2+0!+0+7 | Jerrold Au Ying Xian | 9 | Hwa Chong Institution |
| 7+0^0-2 | Foo Ren Xiang | 3 | Hwa Chong Institution |
| -2^0+0+7 | Han Xiaoxiao | 9 | Hwa Chong Institution |
| Sqrt(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 | 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 Institution |
| 7-(0!)-(0*2) | Xiao Yuting | 8 | Hwa Chong Institution |
| 7-0-(2^0) | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 7-2^0-0 | Yu Zhou | 1 | Hwa Chong Institution |
| 7-(2^0)-0 | Andre | 8 | St. Gabes |
| (7+0^0)-2 | Anthony | 1 | Parker |
| 2x0+(7-0!) | Chrissa | 6 | John F. Kennedy School |
| 7-20^0 | Jared | 6 | Parker Middle School |
| 2*0-0!+7 | NergüL | 10 | ÖZel Fatih Sultan Lisesi |
| 7-2+0^0 | Marissa | 7 | Mount Olive Middle School |
| 7-2+0!-0 | Steven | 6 | Christ The Divine Techer School |
| -2+0!+0+7 | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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