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: 4

 Solution Name Grade School 7-2-0!+0 Kate Ahrens 7 Mount Olive Middle School 7-2+0-0! Neal Amos 10 Brookstone School 7-(2+0^0) 2x(7^0+0!) Max Yoong Pao Aun 7 Hwa Chong Institution 7^0+2+0! Janine A. 6 Parker Middle School 7-2-0^0 Nicole A. 1 Parker Middle School 7-2-0!+0 Justen B 6 Parker Middle School 7-2-0^0 David C 6 Parker Middle School 7-2-0^0 Ryan C. 6 Parker Middle School 7-2-0^0 Spence B 6 Parker Middle School 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)+0^0 Calvin Sim Poh Chuan 12 Hwa Chong Institution 7-2-0^0 Amy C 6 Parker Middle School 7-2-0^0 Troy C 6 Parker Middle School -2-0!+0+7 Sqrt(7+2)+0!+0 7+0-(2+0!) 7/0!-(2+0!) Khu Boon Tat Daren 9 Hwa Chong Institution 2+0!+7^0 Mae D 6 Parker Middle School 7^0+0!+2 Alexandre Dubsky 10 Model Secondary School For The Deaf 7-0^0-2 Tran Ha Duong 9 3h, Hwa Chong Institution (7-2)-0^0 Robert D 6 Parker Middle School 2+0!+(0*7)! Michael Endick 8 Foothill Middle School 2+7^0+0! Tim Freborg 7 Hudson Montessori 7-2-0!-0 Nicholas F. 6 Parker Middle School 7-2-0^0 Zack F 6 Parker Middle School 7-2-0^0 Kam Mao Quan Gabriel 7 Hwa Chong Institution 7-0-(0!)-2 Chan Tuck Ging 7 Hwa Chong Institution 7^0+2+(0!) Aly G. 6 Parker Middle School 7-2-0^0 James G 6 Parker Middle School -2+0-0!+7 Wu Zi Hao 9 Hwachong Institution 7-2-(0^0) Nicholas Heng 8 Hwa Chong Institution (0!+7)/2+0 Angelina Hintze 6 John F. Kennedy School 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) (7-2)-0^0 Matt H 6 Parker Middle School 7-2-(0!+0) Olivia H 6 Parker Middle School 7-2-0!+0 A.J. I 6 Parker Middle School 7-2-0^0 7-2-0!-0 Lee Zi Jian 8 Hwa Chong Instituition 7-2-0!+0 7-2-0^0 Sim Zhi Jian 8 Hwa Chong Instituition 7-2-(0^0) Chow Zheng Jie 9 Hwa Chong Institution 7-2-0^0 Ng Xu Jie 8 Hwa Chong Institution 7-2-0-0! Lau Wei Jie Jonathan 9 Hwa Chong Institution 2+7^0+0! Evan J. 6 Parker Middle School 7-2+0-0! Tim J. 6 Parker Middle School 7-0^0-2 Tan Song Kai 8 Hwa Chong Institution (7+0!+0)/2 7-2-0!+0 Olivia Kamensky 8 Brookstone School 7-2-(0!)+0 Szeto Kah Keong 8 Hwa Chong Institution 7-2-0-0! Delwin Koh 8 Hwa Chong Institution 7-2-0^0 Geena K. 6 Parker Middle School Sqrt(2+7)+0!+0 Won Cheng Yi Lewis 9 Hwa Chong Institution (7-2)-0^0 Amanda L. 6 Parker Middle School (-2!-0!)+0+7 Benjamin Low 8 Hwa Chong Institution 7-2-0!+0 Hannah Marshall 7 M.O.M.S. 7-2-0!-0 Connor M. 6 Parker 7-2-0!+0 Jessica M. 7 Mount Olive Middle School 7-2-0!-0 Kevin M 6 Parker Middle School 7-0^0-2 Margaret M. 6 Parker Middle School 7^0!-2-0! Ng Jun Da Nelson 8 Hwa Chong Instituition 7-2-0!+0 Cam O 6 Parker Middle School 7-0!-2+0 Em O 6 Parkermidleschool 7-2-0!+0 Vanessa O'c 6 Parker Middle School (2+0!)+7^0 Anthony Perry 10 Model Secondary School For The Deaf (7-2-0!)*0! Ow Zhen Quan 8 Hwa Chong Institution 7^0+2+0! 7-2-0^0 Tang Zhuo Hao Ray 7 Hwa Chong Institution 7-2-0!+0 Glenn Goh Rongjie 9 Hwa Chong Insituition 7-2-0!+0 Adam Roenberg 7 Hudson Montessori School 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 7-2-0!+0 Sandra Syhalath 7 Rohrer M.S. (7-2)-0^0 Dylan S. 6 Parker Middle School 7-2-0^0 Nicki S 6 Parker Middle School 7-2-0^0 Jon Tan 8 Hwachong Institution 7-2-0!-0 Chong Tjen-Yao 7 Hwa Chong Institution -2-0!-0+7 Darren Toh 9 Hwa Chong Institution 2+7^0+0! Henry Trimpe 7 Hudson Montessori School 7-(2+0^0) Anna T. 6 Parker Middle School 7-(2+0!)+0 Sarah T 6 Parker Middle School -2-0+0+7 Ang Chong Wei 9 Hwa Chong Institution 2+0!+7^0 7-0!-2-0 Chong Zhi Wei 7 Hwa Chong 7-2-0!-0 Tan Yi Wei 7 Hwa Chong Institution -2-0!+0+7 Han Xiaoxiao 9 Hwa Chong Institution 7-0!-2+0 Lim Han Xin 7 Hci (-2-0!+0)+7 Shaun Lum Yu Xuan 3 Hwa Chong Institution -2-0^0+7 Loh Jun Yan 3 Hwa Chong Institution (High School Section) 2+0!+7^0 Chan Shen Yee 4 Hwa Chong Institution 7-(0!+2)+0 Lee Jun Yi 8 Hwa Chong Institution -2+0-0!+7 Low Kah Yi 9 Hwa Chong Institution 7^0+2+0! Zhou Yifan 3 Hwa Chong Institution 7-2-0!-0 Tan Zher Yin 7 Hci (7+0!)/2+0 Zou Xiang Yu 7 Hwa Chong Institution 7-2-(0!)-0 Xiao Yuting 8 Hwa Chong Institution -2+0-0!+7 Chen Zijin 9 Hwa Chong 7-(0!)-0-2 Ng Soon Zhou 7 Hwa Chong Institution Highschool 7-2-0^0 Yu Zhou 1 Hwa Chong Institution (7+0^0)/2 Anthony 6 Parker 7-2-0^0 Hannah 6 Parker Middle School 7-2-0!+0 Steven 6 Christ The Divine Techer School -2-0!+0+7 Yuanxi 9 Hwa Chong Institution

Please notify Judy Ann Brown of any errors.