These practice questions are designed for students who want to test their skills at the end of the ninth grade level. The test is not an example of what should be taught in 9th grade. It is a compilation of the minimum requirements that students should know by the time they reach the end of 9th grade. The purpose of these practice tests is to help build your proficiency in the area of mathematics. The difference between these tests and others is that each answer has an explanation as to why it is incorrect (This happens right after you answer a question in the text version and after you answered all of the questions in the flash version). Each incorrect answer will then ask another question to see if you have understood the concepts of the question. The test was based on requirements for the State of Ohio 9th Grade Proficiency test.