Shows how to do basic algebra, ratios, proportions, absolute values, polynomials, linear equations, etc.
Convert inches to meters, square feet to hectares, Fahrenheit to Celsius, minutes to days, and more.
Free Math Help
Help with algebra, geometry, trigonometry, calculus and statistics. Has calculators that offer "equation solver" type tools.
Free Online Math Classes from Brigham Young University
Ignore all the advertisements on the main page and use the menu at the left side of the page to get information on any level of math - fractions, percentages, decimals, calculus, geometry, statistics, trigonometry...
Free site where you can get help from other students and use your knowledge to help others.
Paul's Math Notes
Math help sites, tutorials, online exercises, and software recommended by an instructor at Lamar University. (Not all of the recommendations are free, but most of them are.)
Quick & Dirty Tips to Make Math Easier - The Math Dude
Easy to understand tips on how to solve equations, how to easily calculate tips, how to use math to send encrypted messages, and more!
A tutorial that helps you understand fractions by showing you what they would look in a pie chart or on a ruler.
Answers to specific math questions and problems from users.