Khan Academy: Free Learning App 953 views

Study for exams with quizzes and unit tests Over 40,000 interactive practice questions are included with instant feedback and step-by-step hints. Follow along with what you’re learning in school or practice at your own pace Practice our quizzes and whole chapter tests (unit test) in math from classes 6-12 for NCERT/CBSE syllabus. With each quiz and unit test you get personalized recommendations on exercises to focus on, related videos, and step by step hints.