# Algebra Pinball

... is a collection of about 100 algebra and pre-algebra exercises (below) with an option to time yourself. Chart progress towards mastery by your increasingly faster times! Make it social with a fun family or classroom competition. Master these exercises and ace algebra!

These were the rules for the (blazingly fast!) times recorded in the chart below:

• Time yourself on one of the exercises in the Algebra Pinball table below.
• Do at least 20 problems.
• The number correct must be at least 90% of the number attempted. (Don't just click through problems quickly to get ones you know how to solve!)

Here is a sample of the information you get when you stop timing:

## Best Score

at Miss Hall's School,
2005–2008

All times are
seconds per correct problem
Sunny Lee
January 27, 2006
0.7 seconds
Jinghui Zhang
May 3, 2008
0.6 seconds
Woo Ji Kim
October 3, 2007
1.0 seconds
Hyun Sun Seo
April 7, 2008
1.8 seconds
Dr. Carol JVF Burns
Sahuarita, AZ
2.2 seconds
(This one should be easy to beat!)
Masha Jones
January 4, 2006
1.4 seconds
Woo Ji Kim
October 9, 2007
1.1 seconds
Woo Ji Kim
October 3, 2007
1.1 seconds
Seon Ah Yoon
April 18, 2007
1.8 seconds
Sunny Lee
June 2, 2006
1.0 seconds
Soo Yeon Kim
January 16, 2008
1.4 seconds
Woo Ji Kim
October 9, 2007
1.4 seconds
Jinghui Zhang
May 3, 2008
1.4 seconds
Jinghui Zhang
May 3, 2008
1.4 seconds
Jinghui Zhang
May 3, 2008
1.6 seconds
Soo Yeon Kim
February 26, 2008
2.6 seconds
Soo Yeon Kim
October 6, 2007
1.2 seconds
Woo Ji Kim
May 5, 2007
1.2 seconds
Seon Ah Yoon
March 5, 2007
1.2 seconds
Jinghui Zhang
May 3, 2008
1.0 seconds
Jinghui Zhang
May 3, 2008
1.1 seconds
Jinghui Zhang
May 3, 2008
1.8 seconds
Hyun Sun Seo
April 9, 2008
2.2 seconds
Seon Ah Yoon
October 19, 2007
2.0 seconds
Woo Ji Kim
September 27, 2007
0.7 seconds

Ji Yune Kim
September 27, 2007
0.7 seconds
Woo Ji Kim
September 27, 2007
1.1 seconds
Seon Ah Yoon
March 5, 2007
1.0 seconds
Seon Ah Yoon
March 12, 2007
2.2 seconds
Hyun Sun Seo
February 29, 2008
0.7 seconds
Elaine Zhang
December 4, 2007
1.5 seconds
Hyun Sun Seo
February 13, 2008
0.7 seconds per
Woo Ji Kim
April 19, 2007
1.2 seconds
Seon Ah Yoon
October 2, 2007
2.2 seconds
Ji Yune Kim
November 12, 2007
0.8 seconds
Sally Melville
October 17, 2006
5.1 seconds
Ji Yune Kim
October 18, 2007
2.0 seconds
Dr. Carol JVF Burns
Sahuarita, AZ, USA
2.5 seconds
Dr. Carol JVF Burns
Sahuarita, AZ, USA
3.7 seconds
Kyung Eun Lee
October 24, 2007
0.9 seconds
Hyun Sun Seo
April 11, 2007
1.5 seconds
Woo Ji Kim
October 23, 2007
0.9 seconds
Woo Ji Kim
May 5, 2007
1.8 seconds
Woo Ji Kim
October 19, 2007
1.0 seconds
Seon Ah Yoon
March 5, 2007
1.7 seconds
Ji Yune Kim
October 22, 2007
0.8 seconds
Kyung Eun Lee
October 12, 2007
1.0 seconds
Soo Yoon Kim
December 4, 2007
2.3 seconds
Woo Ji Kim
October 18, 2007
1.0 seconds
Woo Ji Kim
September 26, 2007
1.0 seconds
Soo Yeon Kim
October 19, 2007
1.4 seconds
Hyun Sun Seo
April 3, 2008
1.8 seconds
Sei Young Shin
March 9, 2007
4.5 seconds
Woo Ji Kim
May 5, 2007
1.0 seconds
Hyun Sun Seo
April 10, 2008
2.6 seconds
Dr. Carol JVF Burns
Sahuarita, AZ
11.7 seconds per correct problem
(This one should be easy to beat!)
Soo Yeon Kim
February 29, 2008
1.4 seconds
Practice with $x^mx^n = x^{m+n}$
Woo Ji Kim
October 17, 2007
0.9 seconds
Practice with $(x^m)^n = x^{mn}$
Woo Ji Kim
May 5, 2007
1.0 seconds per correct problem
Practice with $\displaystyle\frac{x^m}{x^n} = x^{m-n}$
Woo Ji Kim
October 17, 2007
1.1 seconds
Practice with $\displaystyle x^{-p} = \frac{1}{x^p}$
Soo Yeon Kim
October 18, 2007
0.8 seconds
Woo Ji Kim
December 14, 2007
1.1 seconds
Rurika Oka
January 24, 2006
2.1 seconds
Hyun Sun Seo
March 6, 2008
1.0 seconds
Seon Ah Yoon
January 21, 2008
2.8 seconds
Amelie Dyzmann
October 25, 2006
2.9 seconds
Hyun Sun Seo
February 29, 2008
1.0 seconds
Ji Yune Kim
December 18, 2007
1.1 seconds
Amelie Dyzmann
October 24, 2006
1.9 seconds
Dr. Carol JVF Burns
Sahuarita, AZ
5.4 seconds
(This one should be easy to beat!)
Ji Yune Kim
December 10, 2007
0.9 seconds
Recognizing the Patterns $\,x^n\,$ and $\,(-x)^n\,$
Soo Yeon Kim
February 27, 2008
2.4 seconds
Writing Expressions in the Form $\,kx^n$
Soo Yeon Kim
February 27, 2008
1.5 seconds
Soo Yeon Kim
February 25, 2008
2.0 seconds
Sally Melville
November 6, 2006
5.4 seconds
Seon Ah Yoon
October 6, 2007
6.0 seconds
Kyung Eun Lee
January 10, 2008
4.7 seconds
Woo Ji Kim
April 11, 2008
3.3 seconds
Soo Yeon Kim
February 22, 2008
2.6 seconds
Woo Ji Kim
April 8, 2008
5.3 seconds
Simplifying $\,(a+b)^2\,$ and $\,(a - b)^2$
Woo Ji Kim
April 10, 2008
4.9 seconds
Woo Ji Kim
April 11, 2008
4.4 seconds
Kyung Eun Lee
November 29, 2007
1.2 seconds
Sally Melville
December 11, 2006
3.6 seconds
Hyun Sun Seo
April 7, 2008
2.0 seconds
Kyung Eun Lee
February 5, 2008
4.8 seconds
Seon Ah Yoon
March 9, 2007
3.7 seconds
Soo Yeon Kim
November 8, 2007
1.5 seconds
Hyun Sun Seo
April 11, 2008
3.4 seconds
Sei Young Shin
March 9, 2007
6.6 seconds
Hyun Sun Seo
April 10, 2008
2.1 seconds
Sally Melville
October 20, 2006
6.6 seconds
Dr. Carol JVF Burns
Sahuarita, AZ
14.3 seconds per correct problem
(This one should be easy to beat!)
Dr. Carol JVF Burns
Sahuarita, AZ
15.2 seconds per correct problem
(This one should be easy to beat!)
Woo Ji Kim
December 4, 2007
1.2 seconds
Suk Young Hong
February 14, 2007
0.9 seconds
Ji Yune Kim
January 18, 2008
0.8 seconds
Sei Young Shin
March 9, 2007
4.4 seconds
Dr. Carol JVF Burns
Sahuarita, AZ
2.9 seconds per correct problem
(This one should be easy to beat!)
Factoring Trinomials of the Form $\,ax^2 + bx + c\,$