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 | |
| 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