9math is application for learning math for 9th grade junior high or middle school students. You can find learning materials, questions and answers in this application. Main Menu : - study : in this menu student could learn the main point of the lesson - practice : there are several questions and its explanation - test : student could test their understanding of the lesson. Why use this app? - student could determine number questions (e.g 5 or 30) - questions in random mode - there are 3 difficulty level (easy, medium and difficult) - there are hundreds questions available 9math 9年级初中或初中学生学习数学的应用。你可以找到学习资料，在此应用程序的问题和答案。 主菜单： - 作者：在此菜单中的学生可以学习要点的教训 - 做法：有几个问题及其说明 - 测试：学生可以测试他们的理解的教训。 为什么要使用这个程序？ - 学生可以决定数问题（如5或30） - 在随机模式下的问题 - 有3个难度等级（简单，中等和困难） - 有上百个问题[详情]
