Speed Crunch

A free scientific calculator application for Windows, Mac, and Linux operating systems. Speed Crunch performs all of the functions necessary for high school Algebra and Geometry courses except graphing.


http://www.speedcrunch.org/en_US/index.html

• history and results on a scrollable display
• up to 50 decimal precisions
• unlimited variable storage
• intelligent automatic completion
• fully usable from the keyboard
• more than 50 built-in math functions
• optional virtual keypad to be used with a mouse
• on-the-fly and selection calculation
• customizable appearance
• syntax highlighting and parentheses matching