My basic math test became popular fairly quickly. It soon had close to 500 questions, even though I had only created about 30. The owners of the site asked if I'd be willing to take on the role of "Professor" for that test. As the Professor, I review questions and can now remove questions that don't fit into my definition of "basic math".
If you'd like to test you skills on a few random questions, check out my two tests. You can compete with others to make it on the leaderboard. You can also comment on any of the questions. Please do leave a comment if you see one that shouldn't be there or isn't correct. Have fun!