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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 |
| 7x2+0!+0! | Kate Ahrens | 7 | Mount Olive Middle School |
| (2+0)x(0!+7) | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 2x7+0!+0! | Amanda Algabi | 12 | Model Secondary School For The Deaf |
| 7x2+0!+0! | Neal Amos | 10 | Brookstone School |
| (7*2)+(0!+0!) | Collin Andrew | 7 | Rohrer G. Middle School |
| 7*2+0!+0! | Paulina Baumann | 7 | Rohrer Middle School |
| (7x2)+0!+0! | Corbin Blue | 9 | Christian High School |
| 7*2+0!+0! | Brandon Cepas | 7 | Rohrer Ms |
| 7*2+0!+0! | Bob Chen | 8 | Northwest Junior High |
| 7*2+0!+0! | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 2x7+0!+0! | Paxton Chia | 8 | Hwachong Institution |
| (7x2)+0!+0! | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| (7+0^0)x2 | Amy C | 6 | Parker Middle School |
| (2+0)x(0!+7) | Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7x2+0!+0! | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 0!+0!+2*7 | Michael Endick | 8 | Foothill Middle School |
| (7*2)+(0!+0!) | Timothy Esposito | 7 | Rohrer Middle School |
| 7x2+0!+0! | Sophie Farah | 8 | Hudson Montessori Middle School |
| (7+0!)2+0 | Tim Freborg | 7 | Hudson Montessori |
| (7+0^0)x2 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 7x2+(0!)+(0!) | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 7*2+0!+0! | Rebecca Groff | 7 | Rohrer Ms |
| 2x7+0!+0! | Aly G. | 6 | Parker Middle Shcool |
| 7x2+0!+0! | Maggie G. | 6 | Parker Middle School |
| 2*(0!+0+7) | Wu Zi Hao | 9 | Hwachong Institution |
| 2((7+(0^0)) | Nicholas Heng | 8 | Hwa Chong Institution |
| 7x2+0!+0! | Yeo Si Heng | 8 | Hwa Chong Instituition |
| (2x7)+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! | Lee Zi Jian | 8 | Hwa Chong Instituion |
| 7x2+0!+0! | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 7*2+0!+0! | Ng Xu Jie | 8 | Hwa Chong Institution |
| 2*7+0!+0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| (7+0!)*2+0 | Song Cheng Jun | 7 | Hwa Chong Instituition |
| 7x2+0!+0! | Tan Song Kai | 8 | Hwa Chong Institution |
| 7x2+0!+0! | Olivia Kamensky | 8 | Brookstone School |
| 7x2+(0!)+(0!) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7*2+0!+0! | Delwin Koh | 8 | Hwa Chong Institution |
| 2x7+0!+0! | Gannon Lavins | 7 | Hudson Montessori School |
| 7x2+0!+0! | Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| 2*(0+0!+7) | Benjamin Low | 8 | Hwa Chong Institution |
| 2*(7+0^0) | Amanda L. | 6 | Parker Middle School |
| Sqrt(2)^(7+0!)+0 | Veronika Majcherova | 11 | St.Clare's, Oxford |
| 7*2+0!+0! | Ella Medicus | 8 | Hudson Montessori School |
| 7x2+0!+0! | Timothy Ng Yi Ming | 8 | Hwa Chong Institution |
| 2x7+0!+0! | Connor M. | 6 | Parker |
| 7*2+0!+0! | Jessica M | 7 | Mount Olive Middle School |
| 7x2+0!+0! | Kelsey M | 6 | Parker Middle School |
| 2x7+0!+0! | Margaret M. | 6 | Parker Middle School |
| (7+0^0)x2 | Monie M | 6 | W.S. Parker Middle School |
| (7x2)+0!+0! | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 2*7+0!+0! | Yuxiao Ning | 12 | Hoboken High School |
| 2*7+0!+0! | Thomas Offenburger | 12 | Model Secondary School For The Deaf |
| (2x7)+0!+0! | Cam O | 6 | Parker Middle School |
| (7x2)+(0!+0!) | John O.D | 6 | Parker Middle School |
| (7+0^0)x2 | Siobhan O | 6 | Parker Middle School |
| 2*7+0!+0! | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 7x2+0!+0! | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| (2*7)+(0!+0!) | Shane Reilly | 7 | Roher M.S. |
| (2*7)+(0!+0!) | Nelson Remetz | 7 | Rohrer Ms |
| 7x2+0!+0! | Adam Roenberg | 7 | Hudson Montessori School |
| 2*7+0!+0! | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 7*2+0!+0! | Brandi Rusk | 7 | Rohrer Middle School |
| (7x2)+0!+0! | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 7x2+0!+0! | Caylie Scherba | 8 | Hudson Montessori Middle School |
| (2x7)+0!+0! | Nayan Shah | 8 | Hudson Montessori School |
| 7*2+0!+0! | Sandra Syhalath | 7 | Rohrer M.S. |
| (7x2)+0!+0! | Dylan S. | 6 | Parker Middle School |
| (2+0)x(0!+7) | Darren Toh | 9 | Hwa Chong Institution |
| (7x2)+0!+0! | Henry Trimpe | 7 | Hudson Montessori School |
| (7x2)+0!+0! | Scott Tully | 6 | Parker Middle School |
| 2x7+0!+0! | Ang Chong Wei | 9 | Hwa Chong Institution |
| (7*2)+0!+0!
(7+0!)*2+0 |
Chong Zhi Wei | 7 | Hwa Chong Insitution |
| 7*2+0!+0! | Tan Yi Wei | 7 | Hwa Chong Institution |
| 7*2+0!+0! | Steven Winklosky | 6 | Christ The Divine Techer School |
| (7x2)+0!+0! | Abby W. | 6 | Parker Middle School |
| (7+0^0)*2 | Foo Ren Xiang | 3 | Hwa Chong Institution |
| 2x7+0!+0! | Lim Han Xin | 7 | Hci |
| (7x2)+0!+0! | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 7*2+0!+0! | Chan Shen Yee | 4 | Hwa Chong Institution |
| 7x2+0!+0! | Lee Jun Yi | 8 | Hwa Chong Institution |
| 2*(0!+0+7) | Low Kah Yi | 9 | Hwa Chong Institution |
| 7x2+0!+0! | Zhou Yifan | 3 | Hwa Chong Institution |
| (2x7)+0!+0! | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 7*2+(0!)+(0!)
[7+(0!)]x2+0 |
Xiao Yuting | 8 | Hwa Chong Institution |
| 2*7+(0!)+(0!) | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| (7+0^0)*2 | Yu Zhou | 1 | Hwa Chong Institution |
| 0!+7x2+0! | Chrissa | 6 | John F. Kennedy School |
| Sqrt(2)^(0+0!+7) | NergüL | 10 | ÖZel Fatih Sultan Lisesi |
| 2x7+0!+0! | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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