In my experience, math is one of the subjects that needs the most consistent practice to maintain retention. In addition, since most math concepts build on one another it is important to continue practicing skills learned in the past. I hope you will take advantage of these great resources.
Math.Com provides homework help as well as practice worksheets in all areas of math K-12. It also has games.
Free Math Worksheets provides about 400 free worksheets in all math subjects K-8th as well as Algebra and Geometry. It is well organized by topic and easy to use.
Kuta Software provides free math worksheets for all types of math K-12. I have used these with my students for supplemental practice.
Math is Fun provides a variety of resources from puzzles, games, quizzes, worksheets, and explanation/sample problems for K-12 including Pre-Algebra, Algebra, and Geometry.
Math Teaching Resources provides a variety of resources including math games and math journal tasks for K-5 students aligned with the new Common Core State Standards for Math. This site is organized by grade level and concept.