Previous Algebra Pinball Scores:
SUBTRACTION OF SIGNED NUMBERS

Most recent scores are on top.

Miss Hall's School WORLD Fisher Classes,
2007–2008
Sei Young Shin
Miss Hall's School
Pittsfield, Massachusetts, USA
March 9, 2007
1.2 seconds per correct problem

Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 28, 2007
1.4 seconds per correct problem

Sunny Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
January 27, 2006
1.5 seconds per correct problem

HeeJoo Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 14, 2005
1.7 seconds per correct problem

Min Ah Kwon
Miss Hall's School
Pittsfield, Massachusetts, USA
December 13, 2005
2.1 seconds per correct problem

HeeJoo Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 11, 2005
2.5 seconds per correct problem

Sunny Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
December 9, 2005
2.7 seconds per correct problem
Dong Lim Lee
J-am Elementary School
Seoul, Korea
May 28, 2006
2.6 seconds per correct problem
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 26, 2008
1.7 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 25, 2008
1.8 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 22, 2008
1.9 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 21, 2008
2.0 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 20, 2008
2.1 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 19, 2008
2.3 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 18, 2008
2.6 seconds per correct problem

Woo Ji Kim
Miss Hall's School
Pittsfield, MA, USA
September 20, 2007
1.4 secs/correct problem

Soo Yeon Kim
Miss Hall's School
Pittsfield, MA, USA
September 17, 2007
1.6 secs/correct problem

Woo Ji Kim
Miss Hall's School
Pittsfield, MA, USA
September 12, 2007
2.1 secs/correct problem