CREST Olympiads (Most Innovative Olympiad Exams) established the competition of Mental Maths for class 10 students. This CREST Mental Maths Olympiad (MMO) competition attracts students from more than 25 nations and 4000+ schools to assess the Mental Math abilities of students and help them improve their arithmetic skills. https://www.crestolympiads.com/mental-maths-mmo/class-10