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, 2005. Rules: use the digits in the year 2005 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: 20

 Solution Name Grade School 20-0*5 Simon Alger 10 Cannons Creek 5*2(0!+0!) JP Allport 7 RSM Intermediate 5x(0!+0!)x2 Chris Ashe 6 Johnson Middle School 5*0+20 Jonathan Bailey 6 Johnson Middle School 20x5^0 Andrea Barry 6 Johnson Middle School (5x2)(0!+0!) Leah Bombardier 11 McCann Technical High School 20+(5x0) Esther Braun 5 John Stanford International School; Seattle WA 20-(5x0) Amanda Carney 6 Johnson Middle School 20-(5x0) Casey Ciechanowski 6 Johnson Middle School 5x0+20 Bryan Clark 11 McCann Technical High School 20+(5x0) Julia Connell 6 Johnson Middle School (0!+0!+2)*5 Pauline Dang 7 Rohrer Middle School (2+0!+0!)x5 Noah de Leeuw 5 John Stanford International School; Seattle WA 20+5*0 Maria De Lemos 8 Mount Olive Middle School 20x(5^0) Nick Deshpande 12 John F. Ross CVI 0x5+20 Alex D. 6 Johnson Middle School 20x5^0 Andy Ellis 6 Johnson Middle School 5x2x(0!+0!) Justin Ellis 6 Johnson Middle School 20+5*0 Kristin Euchler 7 Clarksburg Elementary School 20+(0*5) Lim Yu Sheng Fabian 7 Hwa Chong Institution 5x(2+0!+0!) Dave Frizzell 6 Johnson Middle School (2+0!+0!)*5 Lisa Gardner 9 Buchholz High School 0x5+20 Lindsay Griffin 6 Johnson Middle School 20+[5*0] Willem Hardeski 7 Roher Middle School 5x0+20 Savannah Harik 6 Johnson Middle School 20+(5x0) Victoria Hebner 6 Johnson Middle School 20+5x0 Lim Kah Hong 8 Hwachong Institution 5*2*(0!+0!) Lucy Kahn 7 Gordon School 5x0+20 Julia Kelsey 6 Johnson Middle School 5(2(0!+0!)) Adam Lemaire 11 McCann Technical High School (0!+0!)2*5 Andrea Lomeli 9 Coachella Valley High School (5*2)*(0!+0!) Sarah Miller 8 Mount Olive Middle School 20+(5*0) Margaret Mohrenweiser 9 West Milford High School (0!+0!+2)*5 Nicole Monahan 6 Johnson Middle School 5*2*(0!+0!) Nichole Muller 8 Mount Olive Middle School 0x5+20 Kyle Musco 6 Johnson Middle School 5x(2+0!+0!) Dylan M 6 Johnson Middle School 20*5^0 Mark M. 6 Parker Middle School 20+(0x5) Kanako Nakagawa 5 Canadian Academy 20+(5*0) Erin N. 6 Johnson Middle School [0!+0!]*[2*5] Arlete Pichardo 9 Coachella Valley High School 20+(5*0) Calvin Pratt 6 Johnson Middle School 20+(0x5) Amanda Reilly 6 Johnson Middle School 5*(2+0!+0!) Tom Ryan 6 Johnson Middle School (5*2)*(0!+0!) Brendan R 6 Johnson Middle School 5*(2+0!+0!) Chris Salls 8 Mendive (5*0)+20 Dylan Shaw 6 Johnson Middle School 20+(5*0) Courtney S. 6 Johnson Middle School 20+(0*5) Amanda Von Lindern 8 Mount Olive Middle School 5x0+20 Vanessa Walsh 6 Johnson Middle School 5x0+20 Brittney Wheeler 11 McCann Technical High School 20+5x0 Thomas Woodward 11 Brookstone School (5x0)+20 Allie Z. 5 Germantown Academy (2*5)*(0!+0!) Dylan 6 Johnson Middle School 20+(5x0) Kelsey 6 Johnson Middle School 20+(5x0) Kelsey 11 McCann Technical High School 5(0!+0!+2) Lauren 6 Elenor N. Johnson Middle School 20+(5*0) Mollie 6 Johnson Middle School (5*0)+20 Rachel 7 Rohrer Middle School 20-(0*5) Shannon 8 Ahern Middle School 20+(5x0) Emily Falvey and Jenna MacLellan 6 Johnson Middle School 20+5*0 Marco Mongon, Steven Leon 8 Mount Olive Middle School 5^0x20 Courtney, Stefano, and Frank 7 St. Bernadette, Brooklyn NY

Please notify Judy Ann Brown of any errors.