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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 | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 7^2+0!+0 | Neal Amos | 10 | Brookstone School |
| 7^2+0!+0 | Collin Andrew | 7 | Rohrer G. Middle School |
| 70-20 | Marianne A | 6 | Parker Middle School |
| 70-20 | Johnny 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 |
| (7^2)+0!+0 | Paxton Chia | 8 | Hwachong Institution |
| 7^2+0^0 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 70-20 | Hunter Ciuba | 8 | Brookstone |
| 7^2+0!+0 | Kelly Clark | 7 | Rohrer Middle School |
| 70-20 | Nate C. | 6 | Parker Middle School |
| 7^2+0!+0
(7^2+0!)/0! |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 7^2+0!+0 | Michael Endick | 8 | Foothill Middle School |
| 70-20 | Sophie Farah | 8 | Hudson Montessori Middle School |
| 70-20 | Tim Freborg | 7 | Hudson Montessori |
| 70-20 | Sam F | 6 | Parker Middle School |
| 70-20 | Zack F | 6 | Parker Middle School |
| 70-20 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 7^2+0!+0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 70-20 | Maggie G. | 6 | Parker Middle School |
| (7^2)+(0^0) | Nicholas Heng | 8 | Hwa Chong Institution |
| -20+70 | Angelina Hintze | 6 | John F. Kennedy School |
| 7^2+0!+0 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 70-20 | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 70-20 | Matt H | 6 | Parker Middle School |
| 7^2+0^0 | Melissa H | 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 |
| (7^2)+(0^0) | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 7^2+0!+0
70-20 |
Ng Xu Jie | 8 | Hwa Chong Institution |
| 70-20 | Tan Wei Jie | 7 | Hwa Chong Institution |
| (7+0)^2+0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 70-20 | Marcus Phoa Junxiong | 9 | Hwa Chong Institution (High School) |
| 7^2+0^0 | Evan J. | 6 | Parker Middle School |
| 7^2+0!+0
70-20 |
Tan Song Kai | 8 | Hwa Chong Institution |
| 7^2+0!+0 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7^2+0!+0 | Delwin Koh | 8 | Hwa Chong Institution |
| 70-20
7^2+0!+0 |
Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| 7^2-0+0! | Benjamin Low | 8 | Hwa Chong Institution |
| 70-20 | Ashley L | 6 | Parker Middle School |
| 70-20 | Luke Mansour | 9 | Brookstone School |
| (7^2)+0!+0
70-20 |
Hannah Marshall | 7 | M.O.M.S. |
| 7^2+0!+0 | Kelley Mcintire | 9 | Brookstone |
| 7^2+0^0 | Nina Mielcarz | 7 | Rohrer Middle School |
| 70-20 | Timothy Ng Yi Ming | 8 | Hwa Chong Institution |
| 7^2+0!+0 | Tomas Moreno | 9 | Alamo Heights High School |
| 70-20 | Chris Mulroy | 7 | Rohrer Ms |
| 70-20 | Ian M | 6 | Parker Middle School |
| 70-20 | Jessica M. | 7 | Mount Olive 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 Shcool |
| 70-20 | Siobhan O's | 6 | Parker Middle School |
| 70-20 | Nigel Poh | 9 | 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 |
| 70-20 | Erick Rodgers | 7 | Rohrer Ms |
| 7^2+0!+0 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| (7^2)+0!+0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 70-20 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 70-20 | Nayan Shah | 8 | Hudson Montessori School |
| 70-20 | Ang Wee Shuen | 1 | Hwa Chong Institution |
| 70-20 | Rachel Stewart | 7 | Mount Olive Middle School |
| 70-20 | Bobby S | 6 | Parker Middle School |
| 70-20 | Dylan S. | 6 | Parkermiddle School |
| 7^2+0^0 | Katie S | 6 | Parker Middle School |
| 70-20 | Ng Jian Tong | 9 | Hwa Chong Institution |
| 7^2+0^0 | Megan Walter | 7 | Rohrer Ms |
| 70-20 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 7^2+0+0! | Chong Zhi Wei | 7 | Hwachong |
| 7^2+0!+0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 7^2+0!+0 | Jerrold Au Ying Xian | 9 | Hwa Chong Institution |
| 7^2+0!+0 | Lim Han Xin | 7 | Hci |
| 70-20 | Xiong Xingyu | 7 | Hwa Chong Institution |
| 70-20 | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 7^2+(0+0)! | Lee Jun Yi | 8 | Hwa Chong Institution |
| 7^2+0!-0 | Zhou Yifan | 3 | Hwa Chong Institution |
| 70-20 | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 7^2+(0!)-0 | Xiao Yuting | 8 | Hwa Chong Institution |
| 70-20 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 70-20 | Chrissa | 6 | John F. Kennedy School |
| 70-20 | Jared | 6 | Parker Middle School |
| 70-20 | Marissa | 7 | Mount Olive Middle School |
Please notify Judy Ann Brown of any errors.
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