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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 |
| (2+0!)x(0+7) | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 7(0!+0!x2) | Neal Amos | 10 | Brookstone School |
| 7^0+20 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 20+(7*0)! | Bob Chen | 8 | Northwest Junior High |
| 20+(7^0) | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| (2+0!+0)x7 | Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 20+7^0 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 0+(0!+2)*7 | Michael Endick | 8 | Foothill Middle School |
| (2+0^0)x7 | Lim Yu Sheng Fabian | 9 | Hwa Chong Institution |
| [2!+0!+0]x7 | Sam F | 6 | Parker Middle School |
| (2+0^0)x7 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 20+7^0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 7^0+20 | Maggie G. | 6 | Parker Middle School |
| 7((2+(0^0)) | Nicholas Heng | 8 | Hwa Chong Institution |
| 7x0!x(2x0!) | Yeo Si Heng | 8 | Hwa Chong Instituition |
| 20 + 7^0 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| (2+0+0!)(7) | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 20+(7^0) | Lee Zi Jian | 8 | Hwa Chong Instituion |
| 20+(7^0) | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 7x((2)+(0^0)) | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 20+7^0 | Ng Xu Jie | 8 | Hwa Chong Institution |
| 7*(2+0!)+0 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 20+7^0 | Tan Song Kai | 8 | Hwa Chong Institution |
| 7x(2+0!)+0 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 20+(7^0) | Delwin Koh | 8 | Hwa Chong Institution |
| 7(2+0!) | Kelley Mcintire | 9 | Brookstone |
| 7(2+0!)+0 | Jessica M | 7 | Mount Olive Middle School |
| 7x(2+0!)+0 | Margaret M. | 6 | Parker Middle School |
| 20+7^0 | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 20+7^0 | Yuxiao Ning | 12 | Hoboken High School |
| 7*(0!+2)-0 | Zack O'connell | 7 | Rohrer Ms |
| 7x(2+0!)-0 | Cam O | 6 | Parker Middle School |
| 7x(2+0^0) | Jesse P | 6 | Parker Middle School |
| 7*(2+0!)+0 | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 20+7^0 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 7*(2+0!)+0 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| (7x(0!+2))-0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 20+7^0 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 20 + 7^0 | Nayan Shah | 8 | Hudson Montessori School |
| 7^0+20 | Bobby S | 6 | Parker Middle School |
| (2+0!)x(0+7) | Darren Toh | 9 | Hwa Chong Institution |
| 20+7^0 | Natalie V. | 1 | Joshua Eaton |
| 20+7^0 | Ang Chong Wei | 9 | Hwa Chong Institution |
| (2+0!)*7+0
20+7^0 |
Chong Zhi Wei | 7 | Hwa Chong Insitution |
| [7*(2+0^0)] | Andrew Weindel | 7 | Rorer M.S. |
| 7^0+20 | Abby W. | 6 | Parker Middle School |
| 7*(2+0!)-0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| (2+0^0)*7 | Foo Ren Xiang | 3 | Hwa Chong Institution |
| (2+0!)x(7+0) | Lim Han Xin | 7 | Hci |
| 20+(0x7)! | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 20+7^0 | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 20+7^0 | Lee Jun Yi | 8 | Hwa Chong Institution |
| 20+0!^7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 20+7^0 | Zhou Yifan | 3 | Hwa Chong Institution |
| (0!+2)x(0+7) | Zou Xiang Yu | 7 | Hwa Chong Institution |
| [2+(0!)]*7-0 | Xiao Yuting | 8 | Hwa Chong Institution |
| 7*[2+(0!)]+0 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 20+7^0 | Yu Zhou | 1 | Hwa Chong Institution |
| 20+7^0 | Jared | 6 | Parker Middle School |
| 20+7^0 | Marissa | 7 | Mount Olive Middle School |
Please notify Judy Ann Brown of any errors.
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