A Math Forum Project

1999 Mathematics Game

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This Web page is intended to record solutions submitted by students in grades three through twelve. Student solutions were submitted January 1, 1999 through February 1,1999. Submissions for missing numbers can still be submitted using the Web form.

Rules: use the digits in the year 1999 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 91 to 100

  Solution Name Grade School
91 1+9+9*9 Jared Baker 8 Reading-Fleming middle school
91 (9*9)+(9+1) Michael Falls 6 Raymond Park Middle School
91 1 +9+(9)(9) Lisa Gardner 3 Boyette Springs ES
91 9x9+9+1 Michael George 6 Raymond Park Middle School
91 9x9+9+1 Michelle Goldwyn 8 Reading-Fleming Middle School
91 (9 x 9)+ 9 + 1 Lisa Jackson 4 Cheat Lake Elementary
91 (9 x 9 ) + 9 + 1 Will Morrison 4 Cheat Lake Elementary
91 (9*9)+9+1 David Moudy 12 Raymond Park Middle School
91 9x9+9+1 Toni-Ann Syncon 8 St.Jude School, Brooklyn,NY
91 1+(9*9)+9 Chris Waid 8 RFMS
91 9x9+1+9 Chris Whitley 6 Raymond Park Middle School
91 9x9+1+9 Victoria 5 James River Elementary
91 (1+9)+(9*9) Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
91 1+9+9*9 Math Group 11 8 Ashford School
92 9/9%-9+1 Craig Cesareo 8 Lacey Township Middle School
93 [9 + 1] x 9 + sqrt(9) Matt Agnew 7 Wilson Central Junior High, West Lawn, PA
93 (1+9)x9+sqrt9 Wendy Cheung 10 The Bishop Strachan School
93 (9+1)*9+sqrt9 Michael Falls 6 Raymond Park Middle School
93 (1 +9)(9) +sqrt9 Lisa Gardner 3 Boyette Springs ES
93 (9+1)*9+sqrt9 David Moudy 7 Raymond Park Middle School
93 9(9+1)+sqrt9 William Ruiz 7 St.Jude School, Brooklyn,NY
93 (1+9)*9+sqrt9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
94 9/9%-((sqrt9)!)^1 Lisa Gardner 4 Boyette Springs Elementary School
95 9/9% - (sqrt9)!+1 Lisa Gardner 4 Boyette Springs Elementary School
96 (-1+9)x(sqrt9+9) Wendy Cheung 10 The Bishop Strachan School
96 (sqrt9+9)(9-1) Elizabeth Fahey 7 St.Jude School, Brooklyn, NY
96 (9+1)*9+sqrt9! Michael Falls 6 Raymond Park Middle School
96 (-1 +9)(9 +sqrt9) Lisa Gardner 3 Boyette Springs ES
96 (1+9)*9+sqrt9! Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
97 9/9%-1*(sqrt9) Craig Cesareo 8 Lacey Township Middle School
97 9/9%-(1*sqrt(9)) Math Studies 12 Rutherford High School
97 9/9% - (sqrt9)^1 Lisa Gardner 4 Boyette Springs Elementary School
98 9/9%-(sqrt(9)-1) Math Studies 12 Rutherford High School
98 9/9%-(sqrt9)+1 Craig Cesareo 8 Lacey Township Middle School
99 (1 +9)(9) + 9 Lisa Gardner 3 Boyette Springs ES
99 (1+9)x9+9 Sara Gobble 6 Raymond Park Middle School
99 (9+1)x9+9 Michelle Goldwyn 8 Reading-Fleming Middle School
99 9 x ( 9 + 1 ) + 9 Lisa Jackson 4 Cheat Lake Elementary
99 ( ((9+1) x 9 ) + 9 Will Morrison 4 Cheat Lake Elementary
99 (9+1)*9+9 David Moudy 7 Raymond Park Middle School
99 (1+9)9+9 Tom Muller 8 Reading-Fleming Middle School
99 (1+9)*9+9 Chris Waid 8 RFMS
99 (1+9)x9+9 Chris Whitley 6 Raymond Park Middle School
99 9+9(1+9) Melissa Ysaguirre 8 St.Jude School, Brooklyn,NY
99 (1+9)*9+9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
100 (1+9)^((sqrt9)!/sqrt9) Wendy Cheung 10 The Bishop Strachan School
100 (1+9)^(sqrt9!/sqrt9) Michael Falls 6 Raymond Park Middle School
100 [(sqrt(9)!)!-(sqrt(9)!-1)!]/(sqrt(9)!) Andy Floyd 8 Hope Township Elementary, Hope, NJ
100 (1+9)^(sqrt9!/sqrt9) Lisa Gardner 3 Boyette Springs ES

Solutions 1 to 10 Solutions 11 to 20 Solutions 21 to 30
Solutions 31 to 40 Solutions 41 to 50 Solutions 51 to 60
Solutions 61 to 70 Solutions 71 to 80 Solutions 81 to 90
Please notify Judy Ann Brown of any errors.

The Math Forum ** Judy Ann Brown ** 21 December 1999