Math Forum || K-12 Math Puzzles || Problems of the Week || Student Center

 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.

## STUDENT SOLUTIONS: 3

 Solution Name Grade School 2+0!+(0x7) Chua Cheng Aik 9 Hwa Chong Institution 7^0+2-0 Neal Amos 10 Brookstone School Sqrt(2+7-0+0) Max Yoong Pao Aun 7 Hwa Chong Institution 2+7^0+0 Janine A. 6 Parker Middle School 2!+7^0+0 Nick A 6 Parkermiddleschool 7^0+2+0 Khrysta A-H 6 Parker Middle School 0!+2+(7x0) Anton Baker 6 John-F-Kennedy School -2-(0!)-(0!)+7 Goh Bin 9 Hwa Chong Institution 7-2-0!-0! Justen B 6 Parker Middle School 2.0+7^0 Meghan B 6 Parker Middle School 7-2-0!-0! Jamie Caputo 7 Rohrer Middle School 2+(7x0)+0! Cory Cellucci 7 Rohrer Ms 7-2-0!-0! Brandon Cepas 7 Rohrer Ms 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)+0x0 Calvin Sim Poh Chuan 12 Hwa Chong Institution Sqrt(7+2)+0+0 Hunter Ciuba 8 Brookstone 2+7^0+0 Troy C 6 Parker Middle School 2+0!+(0x7) 70^0+2 0.7^0+2 7^0+2.0 Sqrt(7+2)+0/0! Khu Boon Tat Daren 9 Hwa Chong Institution 7^0+2+0 Erica D 6 Parker Middle School 2+(0*0*7)! Michael Endick 8 Foothill Middle School 2+0+7^0 Tim Freborg 7 Hudson Montessori 7-(0!)-(0!)-2 Chan Tuck Ging 7 Hwa Chong Institution 7^0+2+0 Aly G. 6 Parker Middle School 2+7^0+0 Claudia G 6 Parker Middle School 7^0+2+0 J.D. G 6 Parker Middle School 7^0+2+0 Maggie G. 6 Parker Middle School 2+(7^0)+0 Nicholas Heng 8 Hwa Chong Institution 7^0+2+0 Yeo Si Heng 1 Hwa Chong Instituition Sqrt(2+0+0+7) Wu Zi Hao 9 Hwachong Institution 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) 7^0+2-0 Matt H 6 Parker Middle School (7^0+0)+2 Melissa H 6 Parker Middle School 7-(0!+0!)-2 Olivia, H 6 Parker Middle School 7^0+2+0 Peter H 6 Parker Middle School 7x0+2+0! A.J. I 6 Parker Middle School 7-2-0!-0! (0*7)+2+0! Lee Zi Jian 8 Hwa Chong Instituition 7-2-0!-0! Sim Zhi Jian 8 Hwa Chong Instituition (70^0)+2 Chow Zheng Jie 9 Hwa Chong Institution 7-2-0!-0! Ng Xu Jie 8 Hwa Chong Institution 2+0+7^0 Lau Wei Jie Jonathan 9 Hwa Chong Institution 2+0!+0*7 Song Cheng Jun 7 Hwa Chong Instituition (2+0)!+7^0 Christopher Ho Junhong 9 Hwa Chong Institution (Sqrt(7+2))+0+0 Marcus Phoa Junxiong 9 Hwa Chong Institution (High School) 2+7^0+0 Evan J. 6 Parker Middle School [7-2]-[0!+0!] Tim J. 6 Parker Middle School 2+0+7^0 Tan Song Kai 8 Hwa Chong Institution (7x0)+0!+2 Olivia Kamensky 8 Brookstone School (2+0!)+(0*7) Tim Kenna 7 Rohrer Middle School 7-(0!)-(0!)-2 Szeto Kah Keong 8 Hwa Chong Institution 7-2-0!-0! Delwin Koh 8 Hwa Chong Institution (2+0!)+7x0 Sean Lai 8 Hwa Chong Institution 7^0+0+2 7x0+2+0! Sqrt(2+7)+0+0 Won Cheng Yi Lewis 9 Hwa Chong Institution Sqrt(2+0+0+7) Benjamin Low 8 Hwa Chong Institution (7-2)-(0!+0!) Hannah Marshall 7 M.O.M.S. 2!+70^0 Yeo Soon Kiat Matthew 9 Hwa Chong Institution 7*0+0!+2 Kelley Mcintire 9 Brookstone 7-2-0!-0! Ella Medicus 8 Hudson Montessori School 2!+7^0+0 Katie Mictchell 9 Brookstone School (20+0!)/7 Connor M. 6 Parker 2+0*7+0! Jessica M. 7 Mount Olive Middle School 7^0+2+0 Johnathan M 6 Parker Middle School 7-2-0!-0! Kelsey M 6 Parker Middle School 7-2-0!-0! Kevin M 6 Parker Middle School 7^0+2+0 Monie M 6 Parker Middle School 7x0+2+0! Margaret M. 6 Parker Middle School 7^0+2-0 Olivia M 6 Parker Middle School 7^0+2+0 Natalie M. 6 Parker Middle School 7-(2+0!+0!) Ng Jun Da Nelson 8 Hwa Chong Instituition 7^0+2+0 Yuxiao Ning 12 Hoboken High School 7-2-(0!+0!) Brian O 6 Parker Middle School 7-2-0!-0! Cam O 6 Parker Middle School 7-0!-0!-2 Em O 6 Parkermidleschool 7^0+2-0 Andy Chan Boon Pang 8 Hwa Chong Institution 7-(2+0!+0!) (2+0!)(7^0) Anthony Perry 10 Model Secondary School For The Deaf (7*0)+(2+0!) Janey Perry 7 Rohrer Ms 7-(2+0!+0!) Ow Zhen Quan 8 Hwa Chong Institution 7-2-0!-0! Adam Roenberg 7 Hudson Montessori School 7-2-0!-0! Glenn Goh Rongjie 9 Hwa Chong Insituition 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 70^0+2 Rachel Stewart 7 Mount Olive Middle School (7*0)+0!+2 Alexander S 6 Parker Middle School (7-0^0)/2 Dylan S. 6 Parkermiddle School 7^0+2+0 Katie S 6 Parker Middle School 7-0!-0!-2 Kevin .S 6 Parker Middle School 7^0+2+0 Meghan S 6 Parker Middle School 2+7^0+0 Jon Tan 8 Hwachong Institution 7-2-0!-0! Chong Tjen-Yao 7 Hwa Chong Institution (7^0)-0+2 Ng Jian Tong 9 Hwa Chong Institution 7^0+(2+0) Henry Trimpe 7 Hudson Montessori School (2+7^0)-0 Anna T. 6 Parker Middle School 7^0+2+0 Scott T. 6 Parker Middle School 2+0!+0x7 Ang Chong Wei 9 Hwa Chong Institution 2+0+7^0 Sqrt(2+7+0+0) 7-0!-2-0! Chong Zhi Wei 7 Hwa Chong Insitution Sqrt(7+2)+0+0 Kenneth Ng Yu Wei 7 Hwa Chong Institution 2+7^0+0 Tan Yi Wei 7 Hwa Chong Institution 7-2-0!-0! Abby W. 6 Parker Middle School 2+0!+0x7 Jerrold Au Ying Xian 9 Hwa Chong Institution 2+0!+0*7 Han Xiaoxiao 9 Hwa Chong Institution Sqrt(2+0+0+7) Lim Han Xin 7 Hci 2+0!+0x7 Shaun Lum Yu Xuan 3 Hwa Chong Institution 2+0^(0x7) Loh Jun Yan 3 Hwa Chong Institution (High School Section) Sqrt(2+0+0+7) Chan Shen Yee 4 Hwa Chong Institution (2+0!)+0/7 Goh Chin Yee 1 Hwa Chong Institution (2+0!)+(0x7) Lee Jun Yi 8 Hwa Chong Institution Sqrt(2+0+0+7) Low Kah Yi 9 Hwa Chong Institution 7^0+2+0 Zhou Yifan 3 Hwa Chong Institution Sqrt(2+0+0+7) Tan Zher Yin 7 Hci 7-2-(0!)-(0!) Xiao Yuting 8 Hwa Chong Institution Sqrt(2+0+0+7) Ng Soon Zhou 7 Hwa Chong Institution Highschool 7-0!-0!-2 Yu Zhou 1 Hwa Chong Institution 7^0+2-0 Andre 8 St. Gabes 7-(2+0!+0!) Bob 12 Wilson High School 7x0+2+0! Chrissa 6 John F. Kennedy School 7^0+2+0 Hannah 6 Parker Middle School 7*0+2+0! Katie 8 St. Gabriel 7^0+2+0 Munkhsaruul 12 Model Secondary School For The Deaf Sqrt(2+0+0+7) Yuanxi 9 Hwa Chong Institution

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