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: 2

 Solution Name Grade School (7x0)+2-0 Kate Ahrens 7 Mount Olive Middle School 2+(0x0x7) Chua Cheng Aik 9 Hwa Chong Institution 0x70+2 Neal Amos 10 Brookstone School 2-0+(7x0) Max Yoong Pao Aun 7 Hwa Chong Institution 2^0+7^0 Janine A. 6 Parker Middle School 7*0+0+2 Khrysta A-H 6 Parker Middle School 7^0x2+0 Marianne A 6 Parker Middle School 7^0+2^0 Nick A 6 Parkermiddleschool ((7*0)+0)+2 Johnny B. 6 Parker Middle School 0x7+2+0 Luke B 6 Parker Middle School (2.0)+(7x0) Meghan B 6 Parker Middle School 7*0+2+0 Jamie Caputo 7 Rohrer Middle School 2+(7x0)+0 Cory Cellucci 7 Rohrer Ms 7*0+2-0 Brandon Cepas 7 Rohrer Ms (2*7*0)!+0! Bob Chen 8 Northwest Junior High 2+0+(0*7) Timothy Tay Kai Cheng 8 Hwa Chong Institution 2+0+(0x7) Paxton Chia 8 Hwachong Institution 2+70x0 Calvin Sim Poh Chuan 12 Hwa Chong Institution 7x0+2+0 David C 6 Parker Middle School 7x0+2+0 Ryan C. 6 Parker Middle School 2^0+7^0 Troy C 6 Parker Middle School (7x0)+(2-0) Kevin D'amico 7 Rohrer Middle School 2+0x0x7 7^0+2^0 (70x0)+2 Khu Boon Tat Daren 9 Hwa Chong Institution 7x0+2+0 Noah Delius 6 John F. Kennedy School, Berlin, Germany 2+(7x0x0) David D 6 Parker Middle School (70x0)+2 Julia D. 6 Parker Middle School 7x0+2-0 Mae D 6 Parker Middle School 2+0+0*7 Michael Endick 8 Foothill Middle School 2+(7+0x0) Tim Freborg 7 Hudson Montessori 2!+[7x0]+0 Sam F 6 Parker Middle School 2+0+0x7 Kam Mao Quan Gabriel 7 Hwa Chong Institution (7+0)*0+2! Jake Garn 7 Rohrer M.S. (7x0)+0+2 Chan Tuck Ging 7 Hwa Chong Institution 7x0+2+0 Aly G. 6 Parker Middle School 2^0+7^0 Claudia G 6 Parker Middle School 2+(7x0)+0 James G 6 Parker Middle School 7^0x2+0 J.D. G 6 Parker Middle School 2+0+0x7 Wu Zi Hao 9 Hwachong Institution 7*0+0+2 Tj Hawn 7 Rohrer Middle School (2^0)+(7^0) Yeo Si Heng 1 Hwa Chong Instituition (7*0)+(0+2) Emily Himles 7 Rohrer Ms 2x0!x7^0 Kimber Holmes 12 Model Secondary School For The Deaf 7^0+2^0 Cara Hudak 8 Hudson Montessori Middle Scholl 2+0+0(7) Lim Aik Hwee 9 Hwa Chong Institution (High School Section) 7x0+0+2 Jared H 6 Parker Middle School 7x0+2+0 Matt H 6 Parker Middle School (7x0x0)+2 Melissa H 6 Parker Middle School 7^0+2^0 Olivia H 6 Parker Middle School 7^0*2+0 Peter H 6 Parker Middle School 70x0+2 A.J. I 6 Parker Middle School 2+0+(0*7) (0*7)+2-0 Lee Zi Jian 8 Hwa Chong Instituition 2+0+0*7 Sim Zhi Jian 8 Hwa Chong Instituition (7^0)+(2^0) Chow Zheng Jie 9 Hwa Chong Institution 2+0+(0*7) 2!+7^0-0! Ng Xu Jie 8 Hwa Chong Institution 2+0*70 Lau Wei Jie Jonathan 9 Hwa Chong Institution (2^0+7^0)! Christopher Ho Junhong 9 Hwa Chong Institution 2+7^0-0! Evan J. 6 Parker Middle School 2^0 + 7^0 Tan Song Kai 8 Hwa Chong Institution (7*0)+(2-0) Kevin Kasilowski 7 Rohrer Ms (2+0)+(0*7) Tim Kenna 7 Rohrer Middle School (7x0)+0+2 Szeto Kah Keong 8 Hwa Chong Institution 2+0+(0*7) Delwin Koh 8 Hwa Chong Institution 7x0+0+2 Geena K. 6 Parker Middle School 7x0+2+0 Zac K 6 Parker Middle Shcool 2+(7x0!x0) Sean Lai 8 Hwa Chong Institution 2+0+0^7 Gannon Lavins 7 Hudson Montessori School 0/7+0+2 7x0+2+0 7!x0+2+0 (7/2)^0+0! Won Cheng Yi Lewis 9 Hwa Chong Institution (7*0)+2-0 Alexa Lindsay 7 Rohrer Middle School 2+0+0*7 Benjamin Low 8 Hwa Chong Institution 2!+0*7-0 Amanda L. 6 Parker Middle School 7^0+2^0 Ashley L 6 Parker Middle School 2+0+(7x0) Luke Mansour 9 Brookstone School 2+(7*0)+0 Hannah Marshall 7 M.O.M.S. 2^0 + 7^0 John Martin 11 Model Secondary School For The Deaf 2!+(0x7x0) Will Mathews 6 John F. Kenedy School 7x0+0+2 Sammy Mayall 6 Viewpoint 7*0+0+2 Kelley Mcintire 9 Brookstone 7x0+2+0 Brendan M. 6 Parker Middle School 7x0+0+2 Connor M. 6 Parker 2+0*7+0 Jessica M. 7 Mount Olive Middle School (7x0)+0+2 Kelsey M 6 Parker Middle School 0*7+2+0 Margaret M. 6 Parker Middle School 7^0+2^0 Monie M 6 Parker Middle School 7^0+2^0 Natalie M. 6 Parker Middle School 7^0*2+0 Olivia M 6 Parker Middle School 7^0+2^0 Johnathan M 6 Parker Middle School 7^0+2-0! Ng Jun Da Nelson 8 Hwa Chong Instituition 2^0+7^0 Cam O 6 Parker Middle School 7x0+2+0 Matt O 1 Parker Middle School (0*0*7)+2 Andy Chan Boon Pang 8 Hwa Chong Institution (2^0)+(7^0) Anthony Perry 10 Model Secondary School For The Deaf (7*0)+(0+2) Janey Perry 7 Rohrer Ms 2^0+7^0 Nigel Poh 9 Hwa Chong Institution 7*0+2+0 Ryan Prince 7 Rohrer M.S. (7+0!)-((2+0!)!) Ow Zhen Quan 8 Hwa Chong Institution (2^0)+(7^0) 2+0+(0x7) Tang Zhuo Hao Ray 7 Hwa Chong Institution 7!x0+2+0 Adam Roenberg 7 Hudson Montessori School 2+0+(0*7) Glenn Goh Rongjie 9 Hwa Chong Insituition (7^0)+(2^0) Benjamin Lin Ruiyang 1 Hwa Chong Institution 2!+(7*0)+0 Brooke R 6 Parker Middle School 2^0+7^0 Caylie Scherba 8 Hudson Montessori Middle School (2+0)+(7*0) Kassidy Schmidt 7 Rohrer Middle School 7x0x0+2 Elton See 9 Alamo Heights High School 2^0+7^0 Nayan Shah 8 Hudson Montessori School 7*0*0+2 Rachel Stewart 7 Mount Olive Middle School 0x0x7+2 Ethan Swan 8 Christ The Divine Teacher School 7*0+0+2 Alexander S 6 Parker Middle School 7x0+2-0 Bobby S 6 Parker Middle School 7^0+2^0 Katie S 6 Parker Middle School (0!x2)+0x7 Kevin .S 6 Parker Middle School 7^0+2^0 Meghan S 6 Parker Middle School (7x0)+2+0 Nicki S 6 Parker Middle School 2^0+7^0 Jon Tan 8 Hwachong Institution (7-0!)/(2+0!) Chong Tjen-Yao 7 Hwa Chong Institution 2+0+0x7 Darren Toh 9 Hwa Chong Institution (0/7)-0+2 Ng Jian Tong 9 Hwa Chong Institution (0x0x7)+2 Henry Trimpe 7 Hudson Montessori School 2^0+7^0 Anna T. 6 Parker Middle School (7*0)+2-0 Sarah T 6 Parker Middle School (0x70)+2 Scott T. 6 Parker Middle School 2+0x0x7 Ang Chong Wei 9 Hwa Chong Institution (7*0*0)+2 Chong Zhi Wei 7 Hwa Chong Insitution 2^0+7^0 Kenneth Ng Yu Wei 7 Hwa Chong Institution 2+0*0*7 Tan Yi Wei 7 Hwa Chong Institution (7*0+0)+2 Andrew Weindel 7 Rorer M.S. 2^0+7^0 Abby W. 6 Parker Middle School 2+0*0*7 Han Xiaoxiao 9 Hwa Chong Institution 2+0+0x7 Jerrold Au Ying Xian 9 Hwa Chong Institution 2-7*0*0 Li Xichen 1 Hwa Chong Institution 2+0+(0*7) Lim Han Xin 7 Hci 0x7+2+0 Xiong Xingyu 7 Hwa Chong Institution 2+0+0x7 Shaun Lum Yu Xuan 3 Hwa Chong Institution 2+0+0x7 Hshieh Chyi Yan 7 Hwa Chong Intitution 2+0+0x7 Loh Jun Yan 3 Hwa Chong Institution (High School Section) 2+0+0*7 Chan Shen Yee 2 Hwa Chong 2+(0x7+0) Lee Jun Yi 8 Hwa Chong Institution 2+0+0*7 Low Kah Yi 9 Hwa Chong Institution 0x0x7+2 Zhou Yifan 3 Hwa Chong Institution 2+0+0*7 Tan Zher Yin 7 Hci 2+0+(0x7) Zou Xiang Yu 7 Hwa Chong Institution (7x0)+0+2 Xiao Yuting 8 Hwa Chong Institution 2+0+(0*7) Ng Soon Zhou 7 Hwa Chong Institution Highschool 2+0+0*7 Yu Zhou 1 Hwa Chong Institution 7x0+2-0 Alicia Z. 6 Parker Middle School 2^0+7^0 Andre 8 St. Gabes (7*0)+0+2 Anthony 1 Parker 7x0+2+0 Chrissa 6 John F. Kennedy School 7x0+2+0 Hannah 6 Parker Middle School 7*0+2+0 Katie 8 St. Gabriel (70)0+2 Marissa 7 Mount Olive Middle School 2+0x0x7 Yuanxi 9 Hwa Chong Institution

Please notify Judy Ann Brown of any errors.