math
posted by jay .
i am taking a job related test with many math sections. I am long out of school and need some tutorials as well as practice questions and answers. The topics are as follows:
multiplication and division of fractions and mixed numbers
calculating percentages
calculating ratios and proportions
basic rules of probability
calculating rate using distance and time
calculating work related problems
calculating averages
solving for unknown quantities
expressing word problems as equations
calculating the area of an object
i am looking for basic tutorials on how to answer questions of this nature using different methods. If anyone knows of any tricks that would also be very helpful. Any help would be greatly appreciated.

Try these sites.
http://www.khanacademy.org/
http://www.mathsisfun.com/
http://www.purplemath.com/modules/