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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 |
| 70+20 | Kate Ahrens | 7 | Mount Olive Middle School |
| 70+20 | Brian Almand | 7 | Rohrer Ms |
| 70+20 | Neal Amos | 10 | Brookstone School |
| 70+20 | Abbie Basso | 7 | Rohrer Middle School |
| 20+70 | Jerome Bong | 1 | J.F.K. School |
| 70+20 | Matthew Butrica | 7 | Rohrer Middle School |
| 70+20 | Johnny B. | 6 | Parker Middle School |
| 70+20 | Jamie Caputo | 7 | Rohrer Middle School |
| 20+70 | Bob Chen | 8 | Northwest Junior High |
| 70+20 | Timothy Tay Kai Cheng | 8 | Hwa Chong Institution |
| 20+70 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| 70+20 | Steven Christian | 7 | Rohrer Ms |
| 70+20 | Hunter Ciuba | 8 | Brookstone |
| 70+20 | Manuel Contreras III | 11 | Model Secondary School For The Deaf |
| 70+20 | Eddie Cunningham | 7 | Rohrer Ms |
| 70+20 | Billy C. | 6 | Parker Middle School |
| 70+20 | Jake C | 6 | Parker Middle School |
| 70+20 | Nate C. | 6 | Parker Middle School |
| 70+20 | Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| 70+20 | Julia D. | 6 | Parker Middle School |
| 20+70 | Mae D | 6 | Parker Middle School |
| 70+20 | Michael Endick | 8 | Foothill Middle School |
| 20+70 | Timothy Esposito | 7 | Rohrer Middle School |
| 20+70 | Timothy Esposito | 7 | Rohrer 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 |
| 20+70 | Kam Mao Quan Gabriel | 7 | Hwa Chong Instituition |
| 20+70 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| ((2+0!)!)!/(0!+7) | Wu Zi Hao | 9 | Hwachong Institution |
| 70+20 | Tj Hawn | 7 | Rohrer Middle School |
| 70+20 | Nicholas Heng | 8 | Hwa Chong Institution |
| 70+20 | Angelina Hintze | 6 | John F. Kennedy School |
| 70+20 | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| 70+20 | Jared H | 6 | Parker Middle School |
| 70+20 | Lee Zi Jian | 8 | Hwa Chong Instituition |
| 70+20 | Sim Zhi Jian | 8 | Hwa Chong Instiution |
| 70+20 | Chow Zheng Jie | 9 | Hwa Chong Institution |
| 70+20 | Ng Xu Jie | 8 | Hwa Chong Institution |
| 20+70 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| 70+20 | Song Cheng Jun | 7 | Hwa Chong Instituition |
| 70+20 | Marcus Phoa Junxiong | 9 | Hwa Chong Institution (High School) |
| 70+20 | Tan Song Kai | 8 | Hwa Chong Institution |
| 70+20 | Szeto Kah Keong | 8 | Hwa Chong Institution |
| 70+20 | Delwin Koh | 8 | Hwa Chong Institution |
| 70+20 | Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| 20+70 | Benjamin Low | 8 | Hwa Chong Institution |
| 70+20 | Ashley L | 6 | Parker Middle School |
| 70+20 | Kelley Mcintire | 9 | Brookstone |
| 70+20 | Luke Mansour | 9 | Brookstone School |
| 70+20 | Hannah Marshall | 7 | M.O.M.S. |
| 20+70 | William Mathews | 6 | John F. Kenedy School |
| 70+20 | Sammy Mayall | 6 | Viewpoint |
| 70+20 | Timothy Ng Yi Ming | 8 | Hwa Chong Institution |
| 70+20 | Chris Mulroy | 7 | Rohrer Ms |
| 70+20 | Ian M | 6 | Parker Middle School |
| 70+20 | Jessica M. | 7 | Mount Olive Middle School |
| 20+70 | Kathryn M | 6 | Parker Middle School |
| 70+20 | Natalie M. | 6 | Parker Middle School |
| 70+20 | Ryan M | 6 | Parker Middle School |
| 70+20 | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| 70+20 | Yuxiao Ning | 12 | Hoboken High School |
| 20+70 | Vanessa O'c | 6 | Parker Middle School |
| 70+20 | Brian O | 12 | Parker Middle School |
| 70+20 | Cam O | 6 | Parker Middle Shcool |
| 70+20 | Sio O's | 6 | Parker Middle School |
| 20+70 | Janey Perry | 7 | Rohrer Ms |
| 20+70 | Mary Kate Pierson | 7 | Rohrer Middle School |
| 20+70 | Nigel Poh | 9 | Hwa Chong Institution |
| 70+20 | Ryan Prince | 7 | Rohrer M.S. |
| 70+20 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 70+20 | Erick Rodgers | 7 | Rohrer Ms |
| 70+20 | Benjamin Lin Ruiyang | 1 | Hwa Chong Institution |
| 70+20 | Brandi Rusk | 7 | Rohrer Middle School |
| 70+20 | Rachael Samaroo | 7 | Rohrer Middle School |
| 70+20 | Adam Santana | 7 | Rohrer Ms |
| 70+20 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| 70+20 | Alivia Spinozzi | 7 | Rorher Middle School |
| 70+20 | Rachel Stewart | 7 | Mount Olive Middle School |
| 70+20 | Bobby S | 6 | Parker Middle School |
| 70+20 | Jennings S-M | 6 | Parker Middle School |
| 70+20 | Katie S | 6 | Parker Middle School |
| 20+70 | Natalie V. | 6 | Parker Middle School |
| 70+20 | Elizabeth Wargo | 8 | Hudson Montessori School |
| 20+70 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 20+70 | Chong Zhi Wei | 7 | Hwa Chong |
| 70+20 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 70+20 | Andrew Weindel | 7 | Rorer M.S. |
| 70+20 | Dean Wilding | 1 | Model Secondary School For The Deaf |
| 70+20 | Leah W. | 6 | Parker Middle |
| 20+70 | Jerrold Au Ying Xian | 9 | Hwa Chong Institiution |
| 70+20 | Foo Ren Xiang | 3 | Hwa Chong Institution |
| 70+20 | Lim Han Xin | 7 | Hci |
| 20+70 | Xiong Xingyu | 7 | Hwa Chong Institution |
| 70+20 | Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 20+70 | Lee Jun Yi | 8 | Hwa Chong Institution |
| ((2+0!)!)!/(0!+7) | Low Kah Yi | 9 | Hwa Chong Institution |
| 20+70 | Zhou Yifan | 3 | Hwa Chong Institution |
| 70+20 | Zou Xiang Yu | 7 | Hwa Chong Institution |
| 20+70 | Xiao Yuting | 8 | Hwa Chong Institution |
| 70+20 | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 20+70 | Alicia Z. | 6 | Parker Middle School |
| 70+20 | Chrissa | 6 | John F. Kennedy School |
| 20+70 | Melissah | 6 | Parker Middle School |
| 20+70 | Nikki | 6 | Parker Middle School |
Please notify Judy Ann Brown of any errors.
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