Online Calculators

-graphing calculator
http://www.coolmath.com/graphit/

-easy to use basic online calculator
http://www.metacalc.com/

-scientfic calculator
http://www.ecalc.com/calculator/scientific/

-percentage calculator
http://www.onlineconversion.com/percentcalc.htm

-exponent calculator
http://freeonlinecalculator.net/calculators/algebra/exponent.php

-fraction calculator
http://www.helpwithfractions.com/fraction-calculator.html

-matrix calculator
http://www.bluebit.gr/matrix-calculator/

-calculus calculator
http://www.ifigure.com/math/calculus/calculus.htm

-simple calculator
http://www.math.sc.edu/cgi-bin/sumcgi/calculator.pl

-scientific calculator
http://www.alcula.com/extcalc.php