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: 71

 Solution Name Grade School 70+2-0! Kate Ahrens 7 Mount Olive Middle School (2x0)+Sqrt(0!+7!) Chua Cheng Aik 9 Hwa Chong Institution 72-0!-0 Neal Amos 10 Brookstone School 70+2-0! Bob Chen 8 Northwest Junior High 72-0!-0 Timothy Tay Kai Cheng 8 Hwa Chong Institution 2^0+70 Calvin Sim Poh Chuan 12 Hwa Chong Institution (2x0)+Sqrt(0!+7!) Sqrt((2x0)+0!+7!) Khu Boon Tat Daren 9 Hwa Chong Institution Sqrt(7!+0!)+(2*0) Michael Endick 8 Foothill Middle School 2^0+70 Kam Mao Quan Gabriel 7 Hwa Chong Instituition 70+2^0 Chan Tuck Ging 7 Hwa Chong Institution Sqrt(2^0+0+7!) Chew Hanson 7 Hwa Chong Institution(High School) Sqrt(20^0+7!) Wu Zi Hao 9 Hwachong Institution 72-0!-0 Jan Eric Hellenbrand 6 John-.F.-Kennedy 70+2-0! Nicholas Heng 8 Hwa Chong Institution 70+2^0 Yeo Si Heng 8 Hwa Chong Instituition 70+2-0! Lim Aik Hwee 9 Hwa Chong Institution (High School Section) 72-0!+0 Matt H 6 Parker Middle School 70+2-0! Anthony Illiano 7 Rohrer M.S. 72-0!-0 Lee Zi Jian 8 Hwa Chong Instituition 72-0!-0 Sim Zhi Jian 8 Hwa Chong Instiution 70+(2^0) Chow Zheng Jie 9 Hwa Chong Institution 72-0!-0 Ng Xu Jie 8 Hwa Chong Institution 72-0-0! Lau Wei Jie Jonathan 9 Hwa Chong Institution 72-0!+0 Olivia Kamensky 8 Brookstone School 70+2-0! Szeto Kah Keong 8 Hwa Chong Institution 72-0-0! Delwin Koh 8 Hwa Chong Institution 72-0^0 Won Cheng Yi Lewis 9 Hwa Chong Institution 2*0+(Sqrt(0!+7!)) Benjamin Low 8 Hwa Chong Institution 70+2-0! Hannah Marshall 7 M.O.M.S. 72+0-0! William Mathews 6 John F. Kenedy School 72-0!-0 Timothy Ng Yi Ming 8 Hwa Chong Institution 72-0!-0 Jessica M 7 Mount Olive Middle School 72-0!+0 Natalie M. 6 Parker Middle School 70+2^0 Yuxiao Ning 12 Hoboken High School 72-0!+0 Cam O 6 Parker Middle Shcool 72-0^0 Siobhan O's 6 Parker Middle School 72-(0!+0) Mary Kate Pierson 7 Rohrer Middle School 70+2^0 Tang Zhuo Hao Ray 7 Hwa Chong Institution 70+(2-0!) Shane Reilly 7 Roher M.S. 70+2^0 Glenn Goh Rongjie 9 Hwa Chong Instituition 72-0!-0 Benjamin Lin Ruiyang 1 Hwa Chong Institution 70+2^0 Caylie Scherba 8 Hudson Montessori Middle School 72-0!+0 Selena Starbard 7 Rohrer M.S. 72-0!-0 Rachel Stewart 7 Mount Olive Middle School 72-0!+0 Sandra Syhalath 7 Rohrer M.S. 72-0^0 Katie S 6 Parker Middle School 72-0!-0 Chong Tjen-Yao 7 Hwa Chong Institution 2^0+70 Ang Chong Wei 8 Hwa Chong Institution 72+0-0! Chong Zhi Wei 7 Hwachong 70+2-0! Tan Yi Wei 7 Hwa Chong Institution Sqrt(2^0+0+7!) Lim Han Xin 7 HCI 2^0+70 Hshieh Chyi Yan 7 Hwa Chong Institution Sqrt(7!+0+2^0) Chan Shen Yee 12 Hwa Chong Institution 70-0!+2 Lee Jun Yi 8 Hwa Chong Institution Sqrt(20^0+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.

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