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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(7)+0! | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 7(2+0!)+0! | Neal Amos | 10 | Brookstone School |
| 7*(2+0!)+0! | Bob Chen | 8 | Northwest Junior High |
| 7*(2+0!)+0! | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 7x(2+0!)+0! | Paxton Chia | 8 | Hwachong Institution |
| (2+0!)x7+0! | Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| (2+0!)x7+0! | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 0!+(0!+2)*7 | Michael Endick | 8 | Foothill Middle School |
| 7(2+0!)+0! | Sophie Farah | 8 | Hudson Montessori Middle School |
| (2+0!)*7+0! | Amanda Fry | 7 | Rohrer Ms |
| (2+0!)x7+0! | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 7x(2+0!)+0! | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 7*(0!+2)+0! | Molly Grasmick | 7 | Rohrer Ms |
| (0!+2)x7+0! | Maggie G. | 6 | Parker Middle School |
| 7(2+0!)+0! | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 7*(2+0!)+0! | Lee Zi Jian | 1 | Hwa Chong Instituition |
| 7x(2+0!)+0! | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 7*(2+0!)+0! | Ng Xu Jie | 8 | Hwa Chong Institution |
| 7*(2+0!)+0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 7x(2+0!)+0! | Tan Song Kai | 8 | Hwa Chong Institution |
| 7x(2+0!)+(0!) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7*(2+0!)+0! | Delwin Koh | 8 | Hwa Chong Institution |
| (2+0!)*7+0! | Benjamin Low | 8 | Hwa Chong Institution |
| 7(2+0!)+0! | Jessica M | 7 | Mount Olive Middle School |
| 7x(2+0!)+0! | Margaret M. | 6 | Parker Middle School |
| 7x(2+0!)+0! | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| (0!+2)*7+0! | Yuxiao Ning | 12 | Hoboken High School |
| 7*(2+0!)+0! | Ow Zhen Quan | 8 | Hwa Chong Institution |
| (2+0!)x7+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 |
| 7(2+0!)+0! | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 7(2 + 0!) + 0! | Nayan Shah | 8 | Hudson Montessori School |
| 7x(2+0!)+0! | Ang Chong Wei | 9 | Hwa Chong Institution |
| (2+0!)*7+0! | Chong Zhi Wei | 7 | Hwachong Institution |
| 7*(2+0!)+0! | Tan Yi Wei | 7 | Hwa Chong Institution |
| [7*(2+0!)]+0! | Andrew Weindel | 7 | Rorer M.S. |
| (2+0!)x7+0! | Lim Han Xin | 7 | Hci |
| 7x(2+0!)+0! | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 7x(2+0!)+0! | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| [7x(2+0!)]+0! | Lee Jun Yi | 8 | Hwa Chong Institution |
| (2+0!)x7+0! | Zhou Yifan | 3 | Hwa Chong Institution |
| (0!+2)x7+0! | 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 |
| (2+0!)*7+0! | Yu Zhou | 1 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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