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: 69

 Solution Name Grade School 70-2+0! Kate Ahrens 7 Mount Olive Middle School -2-0+Sqrt(0!+7!) Chua Cheng Aik 9 Hwa Chong Institution 70-2+0! Neal Amos 10 Brookstone School 70-2+0! Paulina Baumann 7 Rohrer Middle School 70-2+0! Timothy Tay Kai Cheng 8 Hwa Chong Institution -2-0+Sqrt(0!+7!) 70-(0x2)! Khu Boon Tat Daren 9 Hwa Chong Institution 70-2+0! Michael Endick 8 Foothill Middle School (70-2)+0! Mark Frasco 7 Rohrer Ms 70-2^0 Kam Mao Quan Gabriel 7 Hwa Chong Instituition 70-2^0 Chan Tuck Ging 7 Hwa Chong Institution -2+Sqrt(0!+0+7!) Wu Zi Hao 9 Hwachong Institution 70-2+0! Nicholas Heng 8 Hwa Chong Institution 70-2^0 Yeo Si Heng 8 Hwa Chong Instituition 70-(2^0) Dong Huang 11 St.Clares 70-2+0! Matt H 6 Parker Middle School 70-2+0! Lee Zi Jian 8 Hwa Chong Instituition 70-(2^0) Sim Zhi Jian 8 Hwa Chong Instiution 70-2+0! Ng Xu Jie 8 Hwa Chong Institution 70-2+0! Lau Wei Jie Jonathan 9 Hwa Chong Institution 70-2+0! Tan Song Kai 8 Hwa Chong Institution 70-2+0! Szeto Kah Keong 8 Hwa Chong Institution 70-(2^0) Delwin Koh 8 Hwa Chong Institution -2-0+(Sqrt(0!+7!)) Benjamin Low 8 Hwa Chong Institution 70-(2-0!) Hannah Marshall 7 M.O.M.S. 70-2+0! Chris Mulroy 7 Rohrer Ms 70-2+0! Jessica M 7 Mount Olive Middle School 70-2+0! Ng Jun Da Nelson 8 Hwa Chong Instituition 70-2+0! Yuxiao Ning 12 Hoboken High School 70-2+0! Tang Zhuo Hao Ray 7 Hwa Chong Institution 70-2+0! Erick Rodgers 7 Rohrer Ms 70-2^0 Glenn Goh Rongjie 9 Hwa Chong Instituition 70-2+0! Benjamin Lin Ruiyang 1 Hwa Chong Institution 70-2+0! Brandi Rusk 7 Rohrer Middle School 70-2+0! Rachael Samaroo 7 Rohrer Middle School 70-2^0 Caylie Scherba 8 Hudson Montessori Middle School (70-2)+0! Kassidy Schmidt 1 Rohrer Ms 70-2+0! Alivia Spinozzi 7 Rorher Middle School 70-2+0! Selena Starbard 7 Rohrer M.S. 70-(2-0!) Katie S 6 Parker Middle School 70-2^0 Ang Chong Wei 9 Hwa Chong Institution 70-2^0 Tan Yi Wei 7 Hwa Chong Institution 70-2^0 Lim Han Xin 7 Hci 70-2^0 Hshieh Chyi Yan 7 Hwa Chong Institution 70+0!-2 Lee Jun Yi 8 Hwa Chong Institution -2+Sqrt(0!+0+7!) Low Kah Yi 9 Hwa Chong Institution 70-2+0! Zhou Yifan 3 Hwa Chong Institution 70-2^0 Zou Xiang Yu 7 Hwa Chong Institution 70-2+(0!) Xiao Yuting 8 Hwa Chong Institution 70-[2-(0!)] Ng Soon Zhou 7 Hwa Chong Institution Highschool 70-2^0 Yu Zhou 1 Hwa Chong Institution 70-2+0! Chrissa 6 John F. Kennedy School

Please notify Judy Ann Brown of any errors.