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: 28

 Solution Name Grade School 20+7+0! Kate Ahrens 7 Mount Olive Middle School 20+0!+7 Chua Cheng Aik 9 Hwa Chong Institution 27+0!+0 Neal Amos 10 Brookstone School 20+7+0! Collin Andrew 7 Rohrer G. Middle School 27+0!+0 Abbie Basso 7 Rohrer Middle School 27+0!+0 Gina Bossi 7 Rohrer Middle School 27+0^0 N. B. 6 Parker Middle School 27-0+0! Bob Chen 8 Northwest Junior High 20+7+0! Timothy Tay Kai Cheng 8 Hwa Chong Institution 20+0!+7 Paxton Chia 8 Hwachong Institution 0^0+27 Calvin Sim Poh Chuan 12 Hwa Chong Institution 20+0!+7 Khu Boon Tat Daren 9 Hwa Chong Institution (((0!)+(0!))^2)x7 Noah Delius 6 John F. Kennedy School, Berlin, Germany 7x(0!+0!)x2 Tran Ha Duong 9 3h, Hwa Chong Institution 27+0!+0 Michael Endick 8 Foothill Middle School (2+0!+0!)x7 Lim Yu Sheng Fabian 9 Hwa Chong Institution 7(2+0!+0!) Sophie Farah 8 Hudson Montessori Middle School 20+0!+7 Kam Mao Quan Gabriel 7 Hwa Chong Instituition 20+7+0! Chan Tuck Ging 7 Hwa Chong Institution 20+0!+7 Wu Zi Hao 9 Hwachong Institution 27+0!-0 Nicholas Heng 8 Hwa Chong Institution 27+0^0 7x2x(0!x0!) Yeo Si Heng 8 Hwa Chong Instituition ( 2+0!+0!)(7) Lim Aik Hwee 9 Hwa Chong Institution (High School Section) 27+0!-0 Cara Hudak 8 Hudson Montessori Middle Scholl 20+7+0! Lee Zi Jian 8 Hwa Chong Instituition 20+7+0! Lee Zi Jian 8 Hwa Chong Instituition 20+7+0! Sim Zhi Jian 8 Hwa Chong Instiution 20+7+0! Ng Xu Jie 8 Hwa Chong Institution 20+7+0! Lau Wei Jie Jonathan 9 Hwa Chong Institution 7*(2+0!+0!) Song Cheng Jun 7 Hwa Chong Instituition 7*(2+0!+0!) Tan Song Kai 8 Hwa Chong Institution (20+7)+(0!) Olivia Kamensky 8 Brookstone School 27-0+(0!) Szeto Kah Keong 8 Hwa Chong Institution 20+7+0! Delwin Koh 8 Hwa Chong Institution (2!+0!+0!)*7 Benjamin Low 8 Hwa Chong Institution 7(2+0!+0!) Kelley Mcintire 9 Brookstone 27+0!+0 Chris Mulroy 7 Rohrer Ms 27+0!+0 Jessica M 7 Mount Olive Middle School 7x(2+0!+0!) Margaret M. 6 Parker Middle School 7x(2+0!+0!) Ng Jun Da Nelson 8 Hwa Chong Instituition (0!+0!+2!)*7 Yuxiao Ning 12 Hoboken High School 27+0^0 Nigel Poh 9 Hwa Chong Institution 27+0!+0 Ow Zhen Quan 8 Hwa Chong Institution 27+0!+0 Tang Zhuo Hao Ray 7 Hwa Chong Institution 7*(2+0!+0!) Glenn Goh Rongjie 9 Hwa Chong Insituition 27+0!+0 Benjamin Lin Ruiyang 1 Hwa Chong Institution 27+0+0! Caylie Scherba 8 Hudson Montessori Middle School 27+0!-0 Nayan Shah 8 Hudson Montessori School 0!-0+27 Rachel Stewart 7 Mount Olive Middle School 27+0^0 Katie S 6 Parker Middle School (2+0!+0!)x7 Darren Toh 9 Hwa Chong Institution 20+0!+7 Ang Chong Wei 9 Hwa Chong Institution (2+0!+0!)*7 20+0!+7 Chong Zhi Wei 7 Hwa Chong Insitution 27+0!-0 Tan Yi Wei 7 Hwa Chong Institution 7*(2+0!+0!) Andrew Weindel 7 Rorer M.S. 27+0^0 Abby W. 6 Parker Middle School 20+0!+7 Lim Jing Xi 9 Hwachong Institution (High School Section) 27+0!+0 Jerrold Au Ying Xian 9 Hwa Chong Institution 20+0!+7 Lim Han Xin 7 Hci 20+0!+7 Shaun Lum Yu Xuan 3 Hwa Chong Institution 27+0^0 Hshieh Chyi Yan 7 Hwa Chong Institution [7x(2+0!+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 27-0+0! Zou Xiang Yu 7 Hwa Chong Institution [2+(0!)+(0!)]*7 Xiao Yuting 8 Hwa Chong Institution 27+(0!)+0 Ng Soon Zhou 7 Hwa Chong Institution Highschool 20+0!+7 Yu Zhou 1 Hwa Chong Institution 2x(0!+0!)x7 Limjingxi 9 Hwachong Institution

Please notify Judy Ann Brown of any errors.