2009 Mathematics Game

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This Web page is intended to record solutions submitted by students in grades three through twelve. Submissions will be posted starting February 1, 2009.

Rules: use the digits in the year 2009 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: 30

Solution Name Grade School
(((2+0!)!)!) / ((sqrt 9) +0!)! Qi Yanjun 8 Hwa Chong Institution, Singapore
90/(2 + 0!) Emily Burnett 9 Alamo Heights
20+9+0! Claire Billington 7 International School of Lausanne
90/(2+0!) Roger Aanonsen 7 Mount Olive Middle School
(0!/.2+0)*(sqrt(9))! Davy He 12 No.6 middle school of Guangzhou in China
29 + 0! + 0 Natalie Torres 7 San Fernando middle school
29*(0!)+(0!) Chris Nicolucci 7 William G. Rohrer MS
29*0!+0! megan hemphill 7 Wm g. rohrer MS

Please notify Suzanne Alejandre of any errors.

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