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