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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+7+0+0 | Neal Amos | 10 | Brookstone School |
| 7+2+0+0 | Janine A. | 6 | Parker Middle School |
| 2+0+0+7 | Marianne A | 6 | Parker Middle School |
| 7+2+0+0 | Nick A | 6 | Paker Middle School |
| 2+7+0+0 | Anton Baker | 6 | John-F-Kennedy School |
| 7+2+0+0 | Abbie Basso | 7 | Rohrer Middle School |
| 2+0+0+7 | Morgan Batson | 9 | Brookstone School |
| 7+2+0+0 | Johnny B. | 6 | Parker Middle School |
| 7+2+0+0 | Justen B | 6 | Parker Middle School |
| 2+7+0+0 | Karen B. | 6 | Parker Middle School |
| 2.00+7 | Meghan B | 6 | Parker Middle School |
| (2+0)+(0+7) | 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 |
| 7+2+(0x0) | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 2+0+0+7 | Paxton Chia | 8 | Hwachong Institution |
| 2+0+0+7 | Hunter Ciuba | 8 | Broodkstone |
| 2+0+0+7 | Amber Coleman | 9 | Brookstone High School |
| 2+0+0+7 | Jackie Cuneo | 7 | Rohrer Ms |
| 7+2+0+0 | Amy C | 6 | Parker Middle School |
| 7+2+0+0 | David C | 6 | Parker Middle School |
| 2+0+0+7 | Jake C | 6 | Parker Middle School |
| 7+2+0+0 | Troy C. | 6 | Parker Middle School |
| 2+0+0+7 sqrt(2)xsqrt(0!+0!)+7 |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7+2+0+0 | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| 7+0+0+2 | Jina Desai | 8 | Brookstone |
| 2+0+0+7 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 2+0+0+7 | 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 |
| 7+2-0-0 | Tim Freborg | 7 | Hudson Montessori |
| (2+7)+(0+0) | Amanda Fry | 7 | Rohrer Ms |
| 7+2+0+0 | Sam F | 6 | Parker Middle School |
| 2+0+0+7 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| (0*0)+7+2 | Jake Garn | 7 | Rohrer M.S. |
| 7+2+0+0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 2+0+0+7 | Aly G. | 6 | Parker Middle Shcool |
| 0+0+2+7 | Maggie G. | 6 | Parker Middle School |
| 2+0+0+7 | Wu Zi Hao | 9 | Hwachong Institution |
| 7+2+0+0 | Nicholas Heng | 8 | Hwa Chong Institution |
| 2+7+0+0 | Yeo Si Heng | 8 | Hwa Chong Instituition |
| 7+2+0+0 | Angelina Hintze | 6 | John F. Kennedy School |
| 2+0+0+7 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 2+0+0+7 | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 2+7+0+0 | Matt H | 6 | Parker Middle School |
| 7+2+0+0 | Olivia H | 6 | Parker Middle School |
| 7+2+0+0 | Peter H | 6 | Parker Middle School |
| 7+2+0-0
7+2-0!+0! |
Lee Zi Jian | 8 | Hwa Chong Instituion |
| 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 |
| 07+02 | Tan Wei Jie | 7 | Hwa Chong Institution |
| 2+0+0+7 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 7+2+0+0 | Marcus Phoa Junxiong | 9 | Hwa Chong Institution (High School) |
| 2+7+0+0 | Tim J. | 6 | Parker Middle School |
| 7+2+0+0 | Tan Song Kai | 8 | Hwa Chong Institution |
| 2+0+0+7 | Olivia Kamensky | 8 | Brookstone School |
| 7+2-0-0 | Delwin Koh | 8 | Hwa Chong Institution |
| 7+2+0+0 | Michelle Kozak | 7 | Mount Olive Middle School |
| 7.0+2.0 | Geena K. | 6 | Parker Middle School |
| 7-0-0+2 2.0 + 7.0 7+2!+0+0 0^0( 2+7) 7+2+0+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 |
| 7+2+0+0 | Ashley L | 6 | Parker Middle School |
| 2+7+0+0 | Luke Mansour | 9 | Brookstone School |
| 2+7+0-0 | Will Mathews | 6 | John F. Kenedy School |
| 0+0+7+2 | Kelley Mcintire | 9 | Brookstone |
| (2+0)-0+7 | Ella Medicus | 8 | Hudson Montessori School |
| 7+2+0+0 | Chris Mulroy | 7 | Rohrer Ms |
| 7+2-0-0 | Ankit M | 6 | Parker Middle School |
| 2+0+0+7 | Bre M | 6 | Parker Middle School |
| 7+2+0+0 | Brendan M. | 6 | Parker Middle School |
| 7+2+0+0 | Connor M. | 6 | Parker |
| 7+2+0+0 | Jessica M | 7 | Mount Olive Middle School |
| 2!+7+0+0 | Kelsey M | 6 | Parker Middle School |
| 7+2-0-0 | Kevin M | 1 | Parker Middle School |
| 2+7+0+0 | Margaret M. | 6 | Parker Middle School |
| 7+2+0+0 | Monie M | 6 | Parker Middle School |
| 2+7+0+0 | Natalie M. | 6 | Parker Middle School |
| 2+7-0-0 | Olivia M | 6 | Parker Middle School |
| 7+2+0+0 | Ryan 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 |
| 2+0-0+7 | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 7+2^0+0! | Maria Inez Quesada | 9 | Christian High School |
| 2+0+0+7 | 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 |
| 2-0-0+7 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 7+2-0-0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| (2+0)-0+7 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 7+2+0+0 | Garrett Scherba | 7 | Hudson Montessori School |
| 7+2+0-0 | Nayan Shah | 8 | Hudson Montessori School |
| 2+7+0+0 | Rachel Stewart | 7 | Mount Olive 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 | Nicki S | 6 | Parker Middle School |
| 7+2+0+0 | Jon Tan | 8 | Hwachong Institution |
| 2+0+0+7 | Darren Toh | 9 | Hwa Chong Institution |
| 0+0+7+2 2+7+0+0 7+0+2+0 |
Henry Trimpe | 7 | Hudson Montessori School |
| 7+2-0-0 | Anna T. | 6 | Parker Middle School |
| 2+7+0+0 | Scott T | 6 | Parker Middle School |
| 2+0+0+7 | Kathryn V | 6 | Parker Middle School |
| (2+0)-0+7 | Elizabeth Wargo | 8 | Hudson Montessori School |
| 2+0+0+7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 7+2-0!+0!
2+7+0+0 7+0!+2^0 |
Chong Zhi Wei | 7 | Hwa Chong Insitution |
| 2+0+0+7 | Kenneth Ng Yu Wei | 7 | Hwa Chong Institution |
| 7+2+0+0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| (7+2)+0+0 | Abby W. | 6 | Parker Middle School |
| 2+0+0+7 | Han Xiaoxiao | 9 | Hwa Chong Institution |
| 2+0+0+7 | Lim Han Xin | 7 | Hci |
| 2+0-0+7 | Xiong Xingyu | 7 | Hwa Chong Institution |
| 2+0+0+7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 2+0+0+7 | Hshieh Chyi Yan | 7 | Hwa Chong Intitution |
| 2!+0+0+7 | Chan Shen Yee | 2 | Hwa Chong |
| 7+2+0+0 | Lee Jun Yi | 8 | Hwa Chong Institution |
| 2+0+0+7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 7+2+0+0 | Zhou Yifan | 3 | Hwa Chong Institution |
| 2+0+0+7 | Johnny Yeung Chun Yin | 7 | Hwa Chong Institution |
| 2+0+0+7 | Zou Xiang Yu | 7 | Hwa Chong |
| 7+2+0-0 | Xiao Yuting | 8 | Hwa Chong Institution |
| 2+0+0+7 | 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 |
| (7+2)+0+0 | Anthony | 1 | Parker |
| 0x0+7+2 | Chrissa | 6 | John F. Kennedy School |
| 7+2+0+0 | Jared | 6 | Parker Middle School |
| 2^(0+0!)+7 | NergüL | 10 | ÖZel Fatih Sultan Lisesi |
| 7+2-0+0 | Steven | 6 | Christ The Divine Techer School |
| 2+0+0+7 | Yuanxi | 9 | Hwa Chong Institution |
| 2+0+0+7 | Zhangqiming | 3 | Hwa Chong Institution |
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