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 71 to 80

  Solution Name Grade School
71 (9x9)-(1+9) Jinane Beaubrun 8 St.Jude School,Brooklyn, NY
71 9*9-1-9 Alyssha Duncan 6 Raymond Park Middle School
71 (9*9)-(9+1) Michael Falls 6 Raymond Park Middle School
71 (9*9)-9-1 Jeramey Franklin 6 Raymond Park Middle School
71 (-1 -9) +(9)(9) Lisa Gardner 3 Boyette Springs ES
71 (9 x 9) - 1 - 9 Lisa Jackson 4 Cheat Lake Elementary
71 (9*9)-1-9 Chris Waid 8 RFMS
71 -(1+9)+9*9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
71 9x9-9-1 Victoria 5 James River Elementary
71 9*9-9-1 Math Group 11 8 Ashford School
72 1x9x9-9 Jinane Beaubrun 8 St.Jude School, Brooklyn,NY
72 (9*9)-(9*1) Michael Falls 6 Raymond Park Middle School
72 (1)(- 9) +(9)(9) Lisa Gardner 3 Boyette Springs ES
72 (1+sqrt9!)x9+9 Michelle Goldwyn 8 Reading-Fleming Middle School
72 (9 x 1 x 9) - 9 Lisa Jackson 4 Cheat Lake Elementary
72 1*9*9-9 Kevin Sullens 8 Reading Fleming Middle School
72 (-1^9+9)*9 Chris Waid 8 RFMS
72 9x9-9^1 Victoria 5 James River Elementary
72 9*9*1-9 mathgroup10 8 Ashford School
72 9*9*1-9 Math Group 11 8 Ashford School
73 1-9+9*9 Jared Baker 8 Reading-Fleming middle school
73 (9x9)-(9-1) Jinane Beaubrun 8 St.Jude School, Brooklyn, NY
73 9x9-9+1 Tony Drake 6 Raymond Park Middle School
73 (9*9)-(9-1) Michael Falls 6 Raymond Park Middle School
73 9x9-9+1 Chelsea Flaum 10 Gulf Coast High School
73 (1- 9) +(9)(9) Lisa Gardner 3 Boyette Springs ES
73 9x9-9+1 Sara Gobble 6 Raymond Park Middle School
73 (9 x 9) - 9 + 1 Lisa Jackson 4 Cheat Lake Elementary
73 1+(9*9)-9 Chris Waid 8 RFMS
73 9x9-9+1 Victoria 5 James River Elementary
74 9x9-(sqrt9)!-1 Myrdiana Davilmar 7 St.Jude School, Brooklyn, NY
74 (9*9)-(sqrt9!+1) Michael Falls 6 Raymond Park Middle School
74 (-1 - (sqrt9)! )+(9)(9) Lisa Gardner 3 Boyette Springs ES
74 -1+(9*9)-sqrt9! Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
75 (1+(sqrt9))! x (sqrt9)+(sqrt9) Wendy Cheung 10 The Bishop Strachan School
75 (9x9)-(sqrt9)! x1 Myrdiana Davilmar 7 St.Jude School, Brooklyn, NY
75 (9*9)-(sqrt9! *1) Michael Falls 6 Raymond Park Middle School
75 (-1 +9)(9) +sqrt9 Lisa Gardner 3 Boyette Springs ES
75 1*(9*9)-sqrt9! Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
76 (9*9)-(sqrt9!-1) Michael Falls 6 Raymond Park Middle School
76 (1 - (sqrt9)!) + (9)(9) Lisa Gardner 3 Boyette Springs ES
76 9x9-(sqrt9)!+1 Daphne Ulysse 7 St.Jude School, Brooklyn, NY
76 1+(9*9)-sqrt9! Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
77 (9x9)-(sqr9+1) Sarah Bocik 6 Raymond Park Middle School
77 9x9-(1+sqrt9) Elizabeth Fahey 7 St.Jude School, Brooklyn, NY
77 (9*9)-(sqrt9+1) Michael Falls 6 Raymond Park Middle School
77 (-1 - sqrt9) + (9)(9) Lisa Gardner 3 Boyette Springs ES
77 ( 9x9 ) - sqrt 9 - 1 Jessica Hammond 4 Cheat Lake Elementary
77 (9 x 9) - (sqrt 9) - 1 Lisa Jackson 4 Cheat Lake Elementary
77 9x9-sqrt9-1 Daphne Ulysse 7 St.Jude School, Brooklyn, NY
77 -1+(9*9)-sqrt9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
78 (9x9)-sqrt9x1 Nikita Bacchus 7 St.Jude School, Brooklyn, Ny
78 (9*9)-(sqrt9*1) Michael Falls 6 Raymond Park Middle School
78 (-1 +9)(9) +(sqrt9)! Lisa Gardner 3 Boyette Springs ES
78 (9 x 9) - (sqrt 9) x 1 Lisa Jackson 4 Cheat Lake Elementary
78 9x9-sqrt9x1 Mireille Martineau 7 St. Jude School, Brooklyn, NY
78 1*(9*9)-sqrt9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
79 9x9-sqrt9+1 Elizabeth Fahey 7 St.Jude School, Brooklyn, NY
79 (9*9)-(sqrt9-1) Michael Falls 6 Raymond Park Middle School
79 (1 -sqrt9) +(9)(9) Lisa Gardner 3 Boyette Springs ES
79 (9 x 9) - (sqrt 9) + 1 Lisa Jackson 4 Cheat Lake Elementary
79 (1-sqrt9)+(9*9) Chris Waid 8 RFMS
79 -(-1+sqrt9)+9*9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
79 1+(9*9)-sqrt9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School
80 (1x(sqrt9+sqrt9)! )/9 Wendy Cheung 10 The Bishop Strachan School
80 (sqrt9*9)*sqrt9-1 Michael Falls 6 Raymond Park Middle School
80 (-1^9) +(9)(9) Lisa Gardner 3 Boyette Springs ES
80 sqrt9xsqrt9x9-1 Theresa Mirarchi 7 St.Jude School, Brooklyn, NY
80 9x9-1^9 Victoria 5 James River Elementary
80 -1+sqrt9*9*sqrt9 Jessica Erwin/Crystal Muguerza 7 T.A. Howard Middle School

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 81 to 90 Solutions 91 to 100
Please notify Judy Ann Brown of any errors.

The Math Forum ** Judy Ann Brown ** 22 December 1998