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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 |
| 7-2+0-0! | Neal Amos | 10 | Brookstone School |
| 7-(2+0^0) 2x(7^0+0!) |
Max Yoong Pao Aun | 7 | Hwa Chong Institution |
| 7^0+2+0! | Janine A. | 6 | Parker Middle School |
| 7-2-0^0 | Nicole A. | 1 | Parker Middle School |
| 7-2-0!+0 | Justen B | 6 | Parker Middle School |
| 7-2-0^0 | David C | 6 | Parker Middle School |
| 7-2-0^0 | Ryan C. | 6 | Parker Middle School |
| 7-2-0^0 | Spence B | 6 | Parker Middle School |
| 2+(7*0)!+0! | Bob Chen | 8 | Northwest Junior High |
| 7-2-0!-0 | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| Sqrt(2+7)+0^0 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 7-2-0^0 | Amy C | 6 | Parker Middle School |
| 7-2-0^0 | Troy C | 6 | Parker Middle School |
| -2-0!+0+7 Sqrt(7+2)+0!+0 7+0-(2+0!) 7/0!-(2+0!) |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 2+0!+7^0 | Mae D | 6 | Parker Middle School |
| 7^0+0!+2 | Alexandre Dubsky | 10 | Model Secondary School For The Deaf |
| 7-0^0-2 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| (7-2)-0^0 | Robert D | 6 | Parker Middle School |
| 2+0!+(0*7)! | Michael Endick | 8 | Foothill Middle School |
| 2+7^0+0! | Tim Freborg | 7 | Hudson Montessori |
| 7-2-0!-0 | Nicholas F. | 6 | Parker Middle School |
| 7-2-0^0 | Zack F | 6 | Parker Middle School |
| 7-2-0^0 | Kam Mao Quan Gabriel | 7 | Hwa Chong Institution |
| 7-0-(0!)-2 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 7^0+2+(0!) | Aly G. | 6 | Parker Middle School |
| 7-2-0^0 | James 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 |
| (0!+7)/2+0 | Angelina Hintze | 6 | John F. Kennedy School |
| 2+(7^0+0!) | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| Sqrt((2+0)(0!+7)) | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| (7-2)-0^0 | Matt H | 6 | Parker Middle School |
| 7-2-(0!+0) | Olivia H | 6 | Parker Middle School |
| 7-2-0!+0 | A.J. I | 6 | Parker Middle School |
| 7-2-0^0 7-2-0!-0 |
Lee Zi Jian | 8 | Hwa Chong Instituition |
| 7-2-0!+0 7-2-0^0 |
Sim Zhi Jian | 8 | Hwa Chong Instituition |
| 7-2-(0^0) | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 7-2-0^0 | Ng Xu Jie | 8 | Hwa Chong Institution |
| 7-2-0-0! | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 2+7^0+0! | Evan J. | 6 | Parker Middle School |
| 7-2+0-0! | Tim J. | 6 | Parker Middle School |
| 7-0^0-2 | Tan Song Kai | 8 | Hwa Chong Institution |
| (7+0!+0)/2
7-2-0!+0 |
Olivia Kamensky | 8 | Brookstone School |
| 7-2-(0!)+0 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 7-2-0-0! | Delwin Koh | 8 | Hwa Chong Institution |
| 7-2-0^0 | Geena K. | 6 | Parker Middle School |
| Sqrt(2+7)+0!+0 | Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| (7-2)-0^0 | Amanda L. | 6 | Parker Middle School |
| (-2!-0!)+0+7 | Benjamin Low | 8 | Hwa Chong Institution |
| 7-2-0!+0 | Hannah Marshall | 7 | M.O.M.S. |
| 7-2-0!-0 | Connor M. | 6 | Parker |
| 7-2-0!+0 | Jessica M. | 7 | Mount Olive Middle School |
| 7-2-0!-0 | Kevin M | 6 | Parker Middle School |
| 7-0^0-2 | Margaret M. | 6 | Parker Middle School |
| 7^0!-2-0! | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 7-2-0!+0 | Cam O | 6 | Parker Middle School |
| 7-0!-2+0 | Em O | 6 | Parkermidleschool |
| 7-2-0!+0 | Vanessa O'c | 6 | Parker Middle School |
| (2+0!)+7^0 | Anthony Perry | 10 | Model Secondary School For The Deaf |
| (7-2-0!)*0! | Ow Zhen Quan | 8 | Hwa Chong Institution |
| 7^0+2+0! 7-2-0^0 |
Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 7-2-0!+0 | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| 7-2-0!+0 | Adam Roenberg | 7 | Hudson Montessori School |
| 7-2-0!+0 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 7-2-0!+0 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 2+0!+7^0 | Nayan Shah | 8 | Hudson Montessori School |
| 7-2-0!+0 | Sandra Syhalath | 7 | Rohrer M.S. |
| (7-2)-0^0 | Dylan S. | 6 | Parker Middle School |
| 7-2-0^0 | Nicki S | 6 | Parker Middle School |
| 7-2-0^0 | Jon Tan | 8 | Hwachong Institution |
| 7-2-0!-0 | Chong Tjen-Yao | 7 | Hwa Chong Institution |
| -2-0!-0+7 | Darren Toh | 9 | Hwa Chong Institution |
| 2+7^0+0! | Henry Trimpe | 7 | Hudson Montessori School |
| 7-(2+0^0) | Anna T. | 6 | Parker Middle School |
| 7-(2+0!)+0 | Sarah T | 6 | Parker Middle School |
| -2-0+0+7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 2+0!+7^0 7-0!-2-0 |
Chong Zhi Wei | 7 | Hwa Chong |
| 7-2-0!-0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| -2-0!+0+7 | Han Xiaoxiao | 9 | Hwa Chong Institution |
| 7-0!-2+0 | Lim Han Xin | 7 | Hci |
| (-2-0!+0)+7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| -2-0^0+7 | Loh Jun Yan | 3 | Hwa Chong Institution (High School Section) |
| 2+0!+7^0 | Chan Shen Yee | 4 | Hwa Chong Institution |
| 7-(0!+2)+0 | Lee Jun Yi | 8 | Hwa Chong Institution |
| -2+0-0!+7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 7^0+2+0! | Zhou Yifan | 3 | Hwa Chong Institution |
| 7-2-0!-0 | Tan Zher Yin | 7 | Hci |
| (7+0!)/2+0 | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 7-2-(0!)-0 | Xiao Yuting | 8 | Hwa Chong Institution |
| -2+0-0!+7 | Chen Zijin | 9 | Hwa Chong |
| 7-(0!)-0-2 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 7-2-0^0 | Yu Zhou | 1 | Hwa Chong Institution |
| (7+0^0)/2 | Anthony | 6 | Parker |
| 7-2-0^0 | Hannah | 6 | Parker Middle School |
| 7-2-0!+0 | Steven | 6 | Christ The Divine Techer School |
| -2-0!+0+7 | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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