The Unicus Global Mathematics Olympiad (UGMO) is an international online competition for students from kindergarten to 10th grade. Participants will receive three mock tests to practice before the final exam, which can be attempted three times. The exam consists of multiple-choice questions. Students in kindergarten and 1st grade have 45 minutes to complete the test, while students in 2nd to 10th grade have 60 minutes.
UGMO is held in the winter, and the test topics will match the student's current class syllabus. If your school doesn't organize Olympiads, you can register individually online. Free sample papers are also available for practice.