Learn how to use the regular four-function calculator to calculate:
* adding fractions
* squaring numbers
* area of a circle
* solving quadratic equations
* solving 2 x 2 linear systems
and more!
My five part series:
http://edspi31415.blogspot.com/2012/10/calculator-tricks-part-1.html
Ted Muller's Calculator Magic:
http://tedmuller.us/Math/Calculator-1'Introduction.htm
