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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+0x7 | Chua Cheng Aik | 9 | Hwa Chong Institution |
| 2^7x0+0! | Neal Amos | 10 | Brookstone School |
| 7^0x2^0 | Janine A | 6 | Parker Middle School |
| 2-7^0+0 | Khrysta A | 6 | Parker Middle School |
| 7^0x2^0 | Marianne A | 6 | Parker Middle School |
| 7x0+2^0 | Nick A | 6 | Parkermiddleschool |
| (7*0)+2-0! | Nicole A. | 6 | Parker Middle School |
| 72*0+0! | Abbie Basso | 7 | Rohrer Middle School |
| (7*0)+2-0! | Bryce S. Brown | 7 | William G Rohrer Middle School |
| (2+7)*0+0! | Matthew Butrica | 7 | Rohrer Middle School |
| 7^0+2x0 | Luke B | 6 | Parker Middle School |
| 2.0-7^0 | Meghan B | 6 | Parker Middle School |
| 2-7^0+0 | Spence B | 6 | Parker Middle School |
| 7*0+2-0! | Jamie Caputo | 7 | Rohrer Middle School |
| (7+2)x0+0! | Cory Cellucci | 7 | Rohrer Ms |
| 207^0 | Marissa Chamberlaim | 4 | China Primary School |
| 2*7*0+0! | Bob Chen | 8 | Northwest Junior High |
| 7*0+2-0! | Brandon Cepas | 7 | Rohrer Ms |
| 2*0*7+0! | Quan Chengzhang | 3 | Hwa Chong Institution |
| 207^0 | Calvin Sim Poh Chuan | 12 | Hwa Chong Institution |
| (0*2)+(0*7)! | Kelly Clark | 7 | Rohrer Middle School |
| 207^0 | Emily Cooer | 9 | Cadillac Senior High School |
| 7*2*0+0! | Eddie Cunningham | 7 | Rohrer Ms |
| 2-7^0+0 | Amy C | 6 | Parker Middle School |
| 7x2x0+0! | Billy C. | 6 | Parker Middle School |
| 2-7^0+0 | David C | 6 | Parker Middle School |
| 2^0+7x0 | Ryan C. | 6 | Parker Middle School |
| 2-7^0+0 | Troy C | 7 | Parker Middle School |
| (7x0)+(2-0!) | Kevin D'amico | 7 | Rohrer Middle School |
| 2^0+0x7 7^0+(2x0) 207^0 72x0+0! |
Khu Boon Tat Daren | 9 | Hwa Chong Institution |
| (7x(2x0))+(0!) | Noah Delius | 6 | John F. Kennedy School, Berlin, Germany |
| 0!+(2*0*7) | Kathleen Duffy | 7 | Rohrer Middle School |
| 2-7^0+0 | Tran Ha Duong | 9 | 3h, Hwa Chong Institution |
| 0!x(7x2x0) | David D | 6 | Parker Middle School |
| 2-7^0+0 | Erica D | 6 | Parker Middle School |
| (2x0)^(7x0) | Julia D. | 6 | Parker Middle School |
| 7-(0!+2)!+0 | Michael Endick | 8 | Foothill Middle School |
| ((((2!+0!)!+0!)!)/7!)! | John Euchler | 12 | Mccann Technical School |
| 2-0!+(0x7) | Lim Yu Sheng Fabian | 9 | Hwa Chong Institution |
| (7*0)+(2-0!) | Mark Frasco | 7 | Rohrer Ms |
| (2+7+0)^0 | Tim Freborg | 7 | Hudson Montessori |
| 720^0 | Amanda Fry | 7 | Rohrer Ms |
| (7^2)^0 +0 | Nicholas F. | 6 | Parker Middle School |
| 2^0+0x7 | Kam Mao Quan Gabriel | 7 | Hwa Chong Institution |
| 207^0 | Chan Tuck Ging | 7 | Hwa Chong Institution |
| 2+(0*7)-0! | Molly Grasmick | 7 | Rohrer Ms |
| (7x2)x0+(0!) | Aly G. | 6 | Parker Middle School |
| 7^0x2^0 | Claudia G | 6 | Parker Middle School |
| 2^0+0^7 | J.D. G | 6 | Parker Middle School |
| 2^0+7x0 | James G | 6 | Parker Middle School |
| 2^0x7^0 | Maggie G. | 6 | Parker Middle School |
| 2^0+0x7 | Wu Zi Hao | 9 | Hwachong Institution |
| 2-(7^0)-0 | Nicholas Heng | 8 | Hwa Chong Institution |
| (7+2+0)^0 | Yeo Si Heng | 8 | Hwa Chong Instituition |
| 0!+0*2*7 | Dong Huang | 11 | St.Clares |
| 7^0x2^0 | Cara Hudak | 8 | Hudson Montessori Middle Scholl |
| 2^0-0 (7) | Lim Aik Hwee | 9 | Hwa Chong Institution (High School Section) |
| (7^0)+(2x0) | Jared H | 6 | Parker Middle School |
| (2^0)+(0x7) | Melissa H | 6 | Parker Middle School |
| 7^0+ 0^2 | Olivia H | 6 | Parker Middle School |
| 2*0+7^0 | Peter H | 6 | Parker Middle School |
| (0*7)+2-0! | Lee Zi Jian | 8 | Hwa Chong Instituition |
| 0*7+2-0! | Sim Zhi Jian | 8 | Hwa Chong Instituition |
| (7+2+0)^0 | Chow Zheng Jie | 9 | Hwa Chong Institution |
| (0*7)+2-0! 720^0 |
Ng Xu Jie | 8 | Hwa Chong Instituition |
| 207^0 | Lau Wei Jie Jonathan | 9 | Hwa Chong Institution |
| Sqrt(2^0+0*7) | Christopher Ho Junhong | 9 | Hwa Chong Institution |
| 720^0 | Marcus Phoa Junxiong | 9 | Hwa Chong Institution (High School) |
| 2^0x7^0 | Tan Song Kai | 8 | Hwa Chong Institution |
| (7-2)x0+0! | Olivia Kamensky | 8 | Brookstone School |
| (7*0)+(2-0!) | Kevin Kasilowski | 7 | Rohrer Ms |
| 2^0x7^0 | Rickey Kenneybrew | 10 | Model Secondary School For The Deaf |
| (0!)+(7x2x0) | Szeto Kah Keong | 8 | Hwa Chong Institution |
| (0*7)+2-0! (7-0!-0!)*.2 |
Delwin Koh | 8 | Hwa Chong Institution |
| 0!+7.2x0 | Geena K. | 6 | Parker Middle School |
| (2x7x0)+0! | Zac K | 6 | Parker Middle Shcool |
| 0!+(7x2x0) | Sean Lai | 8 | Hwa Chong Institution |
| (2*0)+(0*7)! | Chris Langum | 7 | Rohrer Ms |
| 2-0!+0^7 | Gannon Lavins | 7 | Hudson Montessori School |
| (0/7)+2-(0!) 7!x0+2!-0! 0x(7/2)+0! (7+2)*0+0! |
Won Cheng Yi Lewis | 9 | Hwa Chong Institution |
| (7*0)+2-0! | Alexa Lindsay | 7 | Rohrer Middle School |
| 2^0+0*7 | Benjamin Low | 8 | Hwa Chong Institution |
| (7-2)^0+0 | Amanda L. | 6 | Parker Middle School |
| 7^0/2^0 | Ashley L | 6 | Parker Middle School |
| 27x0+0! | David Markey | 7 | Mt.Olive Middle School |
| 207^0 | Hannah Marshall | 7 | M.O.M.S. |
| 72x0+0! | William Mathews | 6 | John F. Kenedy School |
| (7x2)x0+0! | Sammy Mayall | 6 | Viewpoint |
| (0*7)+(2-0!) | Tori Mcerlean | 7 | Rohrer Middle School |
| 0!+[(7-2)0] | Kelley Mcintire | 9 | Brookstone |
| (7*0)+(2-0!) | Robert Mounce | 7 | Rohrer Ms |
| 0!+7.2x0 | Ankit M | 6 | Parker Middle School |
| (7^0)+2x0 | Brendan M. | 6 | Parker Middle School |
| 0!+(7x2x0) | Connor M. | 6 | Parker |
| (7x0)+(2^0) | Johnathan M | 6 | Parker Middle School |
| 27^0.0 | Kevin M | 6 | Parker Middle School |
| (2+7)*0+0! | Margaret M. | 6 | Parker Middle School |
| 7^0x2^0 | Monie M | 6 | Parker Middle School |
| 2^0x7^0 | Natalie M. | 6 | Parker Middle School |
| 7*0+2^0 | Olivia M | 6 | Parker Middle School |
| (70+2)^0 | Ng Jun Da Nelson | 8 | Hwa Chong Instituition |
| (2^0)+(7x0) | Brendan N | 6 | Parker Middle School |
| 2^0x7^0 | Cam O | 6 | Parker Middle School |
| (0*7)+2-0! | Andy Chan Boon Pang | 8 | Hwa Chong Institution |
| 702^0 | Robert Parisi | 7 | Mount Olive Middle School |
| (2^0)(7^0) | Anthony Perry | 10 | Model Secondary School For The Deaf |
| (72*0)+0! | Mary Kate Pierson | 7 | Rohrer Middle School |
| 72*0+0! | Ryan Prince | 7 | Rohrer M.S. |
| 2^0+0x7 | Tang Zhuo Hao Ray | 7 | Hwa Chong Institution |
| 72*0+0! | Shane Reilly | 7 | Roher M.S. |
| 2-7^0-0 | Adam Roenberg | 7 | Hudson Montessori School |
| 7*2*0+0! | Glenn Goh Rongjie | 9 | Hwa Chong Insituition |
| (7^0)x(2^0) | Benjamin Lin Ruiyang | 8 | Hwa Chong Institution |
| 0!+(2*0*7) | Brandi Rusk | 7 | Rohrer Middle School |
| 27^0+0 | Brooke R | 6 | Parker Middle School |
| 0!+0*2*7 | Victoria R. | 6 | Parker Middle School |
| 2-7^0+0 | Caylie Scherba | 8 | Hudson Montessori Middle School |
| (7*0)+(2-0!) | Kassidy Schmidt | 7 | Rohrer Middle School |
| 2-0-7^0 | Nayan Shah | 8 | Hudson Montessori School |
| (207)^0 | Rachel Stewart | 7 | Mount Olive Middle School |
| 7*0+2^0 | Alexa Surmick | 7 | Rohrer Middle School |
| 2^(0x0x7) | Ethan Swan | 8 | Christ The Divine Teacher School |
| (0x7)+2^0 | Dylan S. | 6 | Parker Middle School |
| 2-7^0+0 | Katie S | 6 | Parker Middle School |
| 0!+(2x7)x0 | Kevin .S | 6 | Parker Middle School |
| 2-7^0+0 | Meghan S | 6 | Parker Middle School |
| 27^0+0 | Nicki S | 6 | Parker Middle School |
| 2-7^0-0 | Jon Tan | 8 | Hwachong Institution |
| (7-0!)!/[(2+0!)!]! | Chong Tjen-Yao | 7 | Hwa Chong Institution |
| 2^0+0x7 | Darren Toh | 9 | Hwa Chong Institution |
| 207^0 | Ng Jian Tong | 9 | Hwa Chong Institution |
| 7^0 + (0x2) | Henry Trimpe | 7 | Hudson Montessori School |
| 2^0+(7x0) | Anna T. | 6 | Parker Middle School |
| (7-2)*0+0! | Sarah T | 6 | Parker Middle School |
| 2^0x7^0 | Natalie V. | 6 | Parker Middle School |
| (2*0*7)+0! | Megan Walter | 7 | Rohrer Ms |
| 2^0+0x7 | Ang Chong Wei | 9 | Hwa Chong Institution |
| 2^0+(0*7) | Chong Zhi Wei | 7 | Hwa Chong Insitution |
| 207^0 | Tan Yi Wei | 7 | Hwa Chong Institution |
| 2x7x0+0! | Maung Thet Naing Win | 7 | Hwa Chong Institution |
| 720^0 | Leah W. | 6 | Parker Middle |
| 2^0+0x7 | Jerrold Au Ying Xian | 9 | Hwa Chong Institution |
| 2^0+0*7 | Han Xiaoxiao | 9 | Hwa Chong Institution |
| 2-7^(0*0) | Li Xichen | 1 | Hwa Chong Institution |
| 2^0+(0*7) | Lim Han Xin | 7 | Hci |
| 2^0+0x7 | Shaun Lum Yu Xuan | 3 | Hwa Chong Institution |
| 2^0+0x7 (7-2-0)^0 |
Hshieh Chyi Yan | 7 | Hwa Chong Institution |
| 2^0+0x7 | Loh Jun Yan | 3 | Hwa Chong Institution (High School Section) |
| (7^0)+(0x2) | Lee Jun Yi | 8 | Hwa Chong Institution |
| 2^0+0*7 | Low Kah Yi | 9 | Hwa Chong Institution |
| 7^0+0x2 | Zhou Yifan | 3 | Hwa Chong Institution |
| 2^0+0*7 | Tan Zher Yin | 7 | Hci |
| 2^0+(0x7) | Zou Xiang Yu | 7 | Hwa Chong Institution |
| (0!)+(0x2x7) | Xiao Yuting | 8 | Hwa Chong Institution |
| 2^0+(0*7) | Ng Soon Zhou | 7 | Hwa Chong Institution Highschool |
| 2*0+7^0 | Yu Zhou | 1 | Hwa Chong Institution |
| 2^0+0*7 | Chen Zijin | 9 | Hwa Chong Institution,Singapore |
| 27^0+0 | Alicia Z. | 6 | Parker Middle School |
| 27^0-0 | Andre | 8 | St. Gabes |
| 27x0+0! | Chrissa | 6 | John F. Kennedy School |
| (7x0)+2^0 | Hannah | 6 | Parker Middle School |
| (2+7)0+0! | Katie | 8 | St. Gabriel |
| 2-0!+0x7 | Yuanxi | 9 | Hwa Chong Institution |
Please notify Judy Ann Brown of any errors.
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