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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 |
| (7x2)+0+0! | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 0!+7x2+0 | Neal Amos | 10 | Brookstone School |
| 0^0+(2!x7) | Max Yoong Pao Aun | 7 | Hwa Chong Institution |
| 2x7+0!+0 | Janine A. | 6 | Parker Middle School |
| 7*2+0!+0 | Paulina Baumann | 7 | Rohrer Middle School |
| 7*2+0^0 | Justin Boots | 6 | Parker Middle School |
| 7*2+0!+0 | Justen B | 6 | Parker Middle 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!x0!) | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| (0^0)+(7)(2) | Hunter Ciuba | 8 | Brookstone |
| (7*2)+0+0! | Jackie Cuneo | 7 | Rohrer Ms |
| 7x2+0^0 | Amy C | 6 | Parker Middle School |
| 0+0!+(2x7)
.2x70+0! |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7x2+0!+0 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 7x2+0^0 | Erica D | 6 | Parker Middle School |
| 0!+0+2*7 | Michael Endick | 8 | Foothill Middle School |
| 2x7+0^0 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 7x2+(0!)+0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 2x7+0!+0 | Aly G. | 6 | Parker Middle Shcool |
| 7x2+0!+0 | Claudia G | 6 | Parker Middle School |
| 7x2+0^0 | James G | 6 | Parker Middle School |
| (7+0)x2+0! | Maggie G. | 6 | Parker Middle School |
| 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 |
| (7x2)+0!+0 | 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 |
| (7x2)+(0^0) | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 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 |
| 2*7+0!+0 | Tan Song Kai | 8 | Hwa Chong Institution |
| (2x7)+(0!)+0 | Olivia Kamensky | 8 | Brookstone School |
| (7*2)+(0!+0) | Tim Kenna | 7 | Rohrer Middle 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!x0!) | Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| 2(7)+0!+0 | Benjamin Low | 8 | Hwa Chong Institution |
| 7*2+0^0 | Amanda L. | 6 | Parker Middle School |
| 7*2+0!+0 | Kelley Mcintire | 9 | Brookstone |
| 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) | Margaret M. | 6 | Parker Middle School |
| 7x2+0^0 | Monie M | 6 | W.S. Parker Middle School |
| 7x2+0^0 | Natalie M. | 6 | Parker Middle School |
| 7*2-0+0! | Olivia M | 6 | Parker Middle School |
| (7x2)+0!^0 | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 2*7+0!+0 | Yuxiao Ning | 12 | Hoboken High School |
| (2x7)+0!-0 | Cam O | 6 | Parker Middle School |
| (7x2)+(0^0) | Sio O | 6 | Parker Middle School |
| (7x2)+0^0 | 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) | 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 |
| (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 |
| 0^0+2x7 | Benji Shields | 11 | Model Secondary School For The Deaf |
| 7x2+0^0 | Katie S | 6 | Parker Middle School |
| (7x2)+0!+0 | Henry Trimpe | 1 | 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 | Chong Zhi Wei | 7 | Hwa Chong Insitution |
| 7*2+0!-0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 7*2+0^0 | Andrew Weindel | 7 | Rorer M.S. |
| 7*2+0!-0 | Steven Winklosky | 6 | Christ The Divine Techer School |
| 2x7+0!+0 | Lim Han Xin | 7 | Hci |
| 7x2+0!+0 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| (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 |
| 7x2+0+0! | Zhou Yifan | 3 | Hwa Chong Institution |
| 2x(7+0!)-0! | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 7*2+(0!)+0 | Xiao Yuting | 8 | Hwa Chong Institution |
| 2*7+(0!)+0 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 7*2+0^0 | Yu Zhou | 1 | Hwa Chong Institution |
| 0!+7x2+0 | Chrissa | 6 | John F. Kennedy School |
| 2(0+7)+0! | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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