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: 7

 Solution Name Grade School 7-2+0!+0! Kate Ahrens 7 Mount Olive Middle School (2x0x0)+7 Chua Cheng Aik 9 Hwa Chong Institution 7+0x20 Neal Amos 10 Brookstone School 7-2^0+0! (0!+0^2)x7 Max Yoong Pao Aun 7 Hwa Chong Institution 2x0x0+7 Marianne A 6 Parker Middle School 7.0+2x0 Nick A 6 Parkermiddleschool 7+0+(2x0) Anton Baker 6 John-F-Kennedy School 7+2-0!-0! Abbie Basso 7 Rohrer Middle School 0.2*0+7 Hannah Brown 7 Mccracken Jr High School 7x(2x0.0) Meghan B 6 Parker Middle School 7-2+0!+0! Brandon Cepas 7 Rohrer Ms 7-2+0!+0! Bob Chen 8 Northwest Junior High 7-2+(0!+0!) Timothy Tay Kai Cheng 8 Hwa Chong Institution 7-(2^0)x0 Calvin Sim Poh Chuan 12 Hwa Chong Institution (0x2)+0+7 Hunter Ciuba 8 Brookstone 7-2+0!+0! Amy C 6 Parker Middle School 7+2x0x0 David C 6 Parker Middle School 2^0x7+0 Nate C. 6 Parker Middle School 7x2^0+0 Troy C 6 Parker Middle School (2x0x0)+7 Khu Boon Tat Daren 9 Hwa Chong Institution 7+2-0!-0! Tran Ha Duong 9 3h, Hwa Chong Institution 7x(2x0x0) David D 6 Parker Middle School 7+(2*0)+0 Erica D 6 Parker Middle School (0x20)+7 Julia D. 6 Parker Middle School 2x0+7+0 Mae D 6 Parker Middle School 2-0!-0!+7 Michael Endick 8 Foothill Middle School -2+0!+0!+7 Lim Yu Sheng Fabian 9 Hwa Chong Institution 7-2^0+0! Tim Freborg 7 Hudson Montessori 2x0x0+7 Sam F 6 Parker Middle School 2x0+0+7 Kam Mao Quan Gabriel 7 Hwa Chong Instituition (2*0)+0+7 Jake Garn 7 Rohrer M.S. 7-2+(0!)+(0!) Chan Tuck Ging 7 Hwa Chong Institution (7+2)-(0!+0!) Molly Grasmick 7 Rohrer Ms 2^0+7-0! Aly G. 6 Parker Middle School (2x0)+7+0 Claudia G 6 Parker Middle School 7+(2x0)+0 James G 6 Parker Middle School 7+(2x0)+0 J.D. G 6 Parker Middle School 20*0+7 Wu Zi Hao 9 Hwachong Institution (7-2)+0!+0! Jan Eric Hellenbrand 6 John-F.-Kennedy 7-2(0)-0 Nicholas Heng 8 Hwa Chong Institution (2x0)+0+7 Angelina Hintze 6 John F. Kennedy School 7x0!x2^0 Kimber Holmes 12 Model Secondary School For The Deaf (2+0)x0+7 Lim Aik Hwee 9 Hwa Chong Institution (High School Section) 7+(2x0x0) Olivia H 6 Parker Middle School 2^0*7+0 Peter H 6 Parker Middle School 7-2+0!+0! Lee Zi Jian 8 Hwa Chong Instituition 7-2+(0!+0!) Sim Zhi Jian 8 Hwa Chong Instiution 7+(0^20) Chow Zheng Jie 9 Hwa Chong Institution 7-2+(0!+0!) Ng Xu Jie 8 Hwa Chong Institution 7+0+0^2 Lau Wei Jie Jonathan 9 Hwa Chong Institution (2x0)+7+0 Tim J. 6 Parker Middle School 0!x2^0x7 Tan Song Kai 8 Hwa Chong Institution (0!+0!+7)-2 7-2+0!+0! Olivia Kamensky 8 Brookstone School 7-(2x0)+0 Szeto Kah Keong 8 Hwa Chong Institution 7-2+0!+0! Delwin Koh 8 Hwa Chong Institution 7+0x2+0 Geena K. 6 Parker Middle School 0/2+0+7 7/(0!+0!)*2 (7*2)/(0!+0!) Won Cheng Yi Lewis 9 Hwa Chong Institution 2*0+0+7 Benjamin Low 8 Hwa Chong Institution 7*(2!-0^0) Amanda L. 6 Parker Middle School 7+0+(2x0) Luke Mansour 9 Brookstone School 2+7-(0!+0!) Hannah Marshall 7 M.O.M.S. 2*0+7+0 Kelley Mcintire 9 Brookstone 7+2-0!-0! Ella Medicus 8 Hudson Montessori School 7+0!+0!-2 Timothy Ng Yi Ming 8 Hwa Chong Institution 7+(2x0+0) Brendan M. 6 Parker Middle School 0+2x0+7 Connor M. 6 Parker 7+2-0!-0! Jessica M 7 Mount Olive Middle School 2x0+0+7 Kelsey M 6 Parker Middle School 0.0*2+7 Kevin M 6 Parker Middle School 2x0+7+0 Margaret M. 6 Parker Middle School 0/2+7+0 Olivia M 6 Parker Middle School 7+0!+0!-2 Ng Jun Da Nelson 8 Hwa Chong Instituition 7+0*2*0 Yuxiao Ning 12 Hoboken High School 7-2+0!+0! Cam O 6 Parker Middle School 7-0!-0!+2 Em O 6 Parkermidleschool (2x0)+(7+0) Sio O 6 Parker Middle School 7+(0*0*2) Andy Chan Boon Pang 8 Hwa Chong Institution (7*2)/(0!+0!) Ow Zhen Quan 8 Hwa Chong Institution 7+2-0!-0! Tang Zhuo Hao Ray 7 Hwa Chong Institution (2+7)-(0!-0!) Shane Reilly 7 Roher M.S. 20*0+7 Glenn Goh Rongjie 9 Hwa Chong Insituition 7-2+0!+0! Benjamin Lin Ruiyang 1 Hwa Chong Institution 7+(2*0)+0 Brooke R 6 Parker Middle School 7+0!+0!-2 Caylie Scherba 8 Hudson Montessori Middle School 7+0^2-0 Nayan Shah 8 Hudson Montessori School 0x0x2+7 Ethan Swan 8 Christ The Divine Teacher School 7+2-0!-0! Sandra Syhalath 7 Rohrer M.S. 2x0+7-0 Bobby S 6 Parker Middle School 7+0^2+0 Katie S 6 Parker Middle School 7+(2x0)+0 Nicki S 6 Parker Middle School (2x0)+(7+0) Altic Tans 9 Christian High School 2x0+0+7 Darren Toh 9 Hwa Chong Institution (0/2)-0+7 Ng Jian Tong 9 Hwa Chong Institution (7+0)x2^0 Henry Trimpe 1 Hudson Montessori School 7x2^0-0 Anna T. 6 Parker Middle School 7+0!+0!-2 Elizabeth Wargo 8 Hudson Montessori School 2x0x0+7 Ang Chong Wei 9 Hwa Chong Institution 7+0!-2+0! Chong Zhi Wei 7 Hwa Chong Insitution 7+2x0+0 Kenneth Ng Yu Wei 7 Hwa Chong Institution 7-2*0-0 Tan Yi Wei 7 Hwa Chong Institution (7-2)+0!+0! Abby W. 6 Parker Middle School (2-0^0)*7 Foo Ren Xiang 3 Hwa Chong Institution 2*0*0+7 Han Xiaoxiao 9 Hwa Chong Institution 2x0x0+7 Lim Han Xin 7 Hci 0x2+7+0 Xiong Xingyu 7 Hwa Chong Institution 2x0+0+7 Shaun Lum Yu Xuan 3 Hwa Chong Institution 2x0x0+7 Hshieh Chyi Yan 1 Hwa Chong Institution 20x0+7 Loh Jun Yan 3 Hwa Chong Institution (High School Section) 2*0+0+7 0/.02+7 Chan Shen Yee 2 Hwa Chong 7+(0x0x2) Lee Jun Yi 8 Hwa Chong Institution 20*0+7 Low Kah Yi 9 Hwa Chong Institution 7-2x0x0 Zhou Yifan 3 Hwa Chong Institution 2x0+0+7 Zou Xiang Yu 7 Hwa Chong In 7-0-(0*2) Xiao Yuting 8 Hwa Chong Institution 7+0+(2*0) Ng Soon Zhou 7 Hwa Chong Institution Highschool 2*0*0+7 Yu Zhou 1 Hwa Chong Institution (2x0)+7-0 Andre 8 St. Gabes (7+0^2)+0 Anthony 6 Parker 2x0+7+0 Chrissa 6 John F. Kennedy School 0+0*2+7 Jared 6 Parker Middle School (2!-0!-0!)+7 Limjingxi 9 Hwachong Institution 2^(0+0)*7 NergüL 10 ÖZel Fatih Sultan Lisesi (2*0)+7+0 Steven 6 Christ The Divine Techer School 2x0x0+7 Yuanxi 9 Hwa Chong Institution

Please notify Judy Ann Brown of any errors.