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: 19

 Solution Name Grade School 20-7^0 Kate Ahrens 7 Mount Olive Middle School 20-7^0 Chua Cheng Aik 9 Hwa Chong Institution 20-(7*0)! Bob Chen 8 Northwest Junior High 20-(7^0) Timothy Tay Kai Cheng 8 Hwa Chong Institution 20-7^0 Calvin Sim Poh Chuan 12 Hwa Chong Institution 20-(0x7)! Khu Boon Tat Daren 9 Hwa Chong Institution 20-7^0 Tran Ha Duong 9 3h, Hwa Chong Institution Sqrt((7-0!)!/2+0!) Michael Endick 8 Foothill Middle School 20-7^0 Tim Freborg 7 Hudson Montessori 20-7^0 Sam F 6 Parker Middle School 20-7^0 Kam Mao Quan Gabriel 7 Hwa Chong Instituition 20-7^0 Chan Tuck Ging 7 Hwa Chong Institution 20-7^0 Aly G. 6 Parker Middle Shcool 20-7^0 Cara Hudak 8 Hudson Montessori Middle Scholl 20-(7^0) Lee Zi Jian 8 Hwa Chong Instituion 20-(7^0) Sim Zhi Jian 8 Hwa Chong Instiution 20-(7^0) Chow Zheng Jie 9 Hwa Chong Institution 20-(7^0) Ng Xu Jie 8 Hwa Chong Institution 20-7^0 Lau Wei Jie Jonathan 9 Hwa Chong Institution 20-7^0 Tan Song Kai 8 Hwa Chong Institution 20-(0^7)! Szeto Kah Keong 8 Hwa Chong Institution 20-(7^0) Delwin Koh 8 Hwa Chong Institution 20-7^0 Benjamin Low 8 Hwa Chong Institution 20-7^0 Amanda L. 6 Parker Middle School 20-7^0 Connor M. 6 Parker 20-7^0 Jessica M 7 Mount Olive Middle School 20-7^0 Margaret M. 6 Parker Middle School 20-7^0 Natalie M. 6 Parker Middle School 20-7^0 Ng Jun Da Nelson 8 Hwa Chong Instituition 20-7^0 Yuxiao Ning 12 Hoboken High School 20-7^0 Tang Zhuo Hao Ray 7 Hwa Chong Institution 20-7^0 Adam Roenberg 7 Hudson Montessori School 20-7^0 Glenn Goh Rongjie 9 Hwa Chong Insituition 20-7^0 Benjamin Lin Ruiyang 1 Hwa Chong Institution 20-7^0 Caylie Scherba 8 Hudson Montessori Middle School 20-7^0 Nayan Shah 8 Hudson Montessori School 20-0^7 Darren Toh 9 Hwa Chong Institution 20-7^0 Henry Trimpe 1 Hudson Montessori School 20-7^0 Natalie V. 6 Parker Middle School 20-7^0 Ang Chong Wei 9 Hwa Chong Institution 20-7^0 Chong Zhi Wei 7 Hwa Chong Insitution 20-7^0 Tan Yi Wei 7 Hwa Chong Institution 20-7^0 Abby W. 6 Parker Middle School 20-(0x7)! Lim Han Xin 7 Hci 20-(0x7)! Shaun Lum Yu Xuan 3 Hwa Chong Institution 20-7^0 Hshieh Chyi Yan 7 Hwa Chong Institution 20-7^0 Lee Jun Yi 8 Hwa Chong Institution 20-0!^7 Low Kah Yi 9 Hwa Chong Institution 20-7^0 Zhou Yifan 3 Hwa Chong Institution 20-[(0*7)!] Ng Soon Zhou 7 Hwa Chong Institution Highschool 20-7^0 Yu Zhou 1 Hwa Chong Institution 20-7^0 Jared 6 Parker Middle School 20-7^0 Marissa 7 Mount Olive Middle School 20-0!^7 NergüL 10 ÖZel Fatih Sultan Lisesi 20-7^0 Yuanxi 9 Hwa Chong Institution

Please notify Judy Ann Brown of any errors.