McGraw Hill
Glencoe: Self Check Chapter Test Ratio, Proportions, and Percent 20 Questions
The interactive assessment examines ratios, proportions, and percents. Students complete 20 questions created by Glencoe. Hints and solutions are included.
National Council of Teachers of Mathematics
Nctm: Figure This: Salaries
Use the information from the U.S. Census to determine if women will ever earn as much money as men.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Percent Increase and Decrease
Find a quick, concise explanation of how to find what the percent of increase or decease is. Examples are given and clearly explained.