What it is
The Unified International Mathematics Olympiad (UIMO) is the maths olympiad run by Unified Council, the organiser of NSTSE. It is for Classes 1 to 10 and has a single paper; there are no later rounds.
What sets the UIMO apart is the shape of its senior paper. From Class 6, alongside ordinary single-answer questions, it includes a short set of multiple-correct questions, where two, three or all four options may be right and a student must find every correct one. These carry 3 marks each instead of 1.
| Classes | Sections | Questions | Marks |
|---|---|---|---|
| 1–2 | Mathematics 30, Logical Reasoning 10 | 40 | 40 |
| 3–5 | Mathematics 35, Logical Reasoning 10, Critical Thinking 5 | 50 | 50 |
| 6–10 | Mathematics-1: 30, Mathematics-2: 5 multiple-correct, Logical Reasoning 10, Critical Thinking 5 | 50 | 60 |
The paper lasts one hour, all questions are objective, and Unified Council states there is no negative marking for wrong answers. It says the papers suit students following CBSE, ICSE/ISC and various state board syllabi.
Who can take it
Students in Classes 1 to 10, by one of two routes:
- Through a participating school. The offline UIMO is conducted on school premises. For this version Unified Council does not accept individual application forms; the school registers its students together.
- Online, from home. Unified Council also runs a fully online UIMO that students can register for directly. It needs a computer or laptop with an internet connection and a webcam, and no visit to a centre.
How it works
- Registration. The school’s coordinator sends one consolidated list to Unified Council. Families using the online route register on Unified Council’s registration site instead.
- The paper. School students write it in school on the offline date. Online candidates usually get a mock exam before the final one, so they can check their setup.
- Results and ranks. Students are ranked within their class. Unified Council’s page says ties are separated first by marks section by section, and then by the time taken. Results for the online exam are declared about 45 days after it.
Unified Council describes prizes for class-wise rank holders, class toppers in each school and state toppers, awards for schools, and participation certificates for everyone who appears. The details for this year are on the official site.
When it happens
The school-based UIMO is usually held in December, and the online version usually follows in January. Check the official Unified Council page for this year’s dates and the last date for school registration, and the olympiad calendar to see the other maths olympiads by month.
How to prepare
Get used to multiple-correct questions (Classes 6–10). These five questions are worth 15 of 60 marks. Many students are used to stopping at the first right-looking option. Practise checking every option on its own: is this statement true or false? Then mark all the true ones.
Build calculation fluency. Most of the paper is single-answer maths. Clean, quick arithmetic and comfortable use of fractions, decimals and percentages save time for the harder questions.
Give reasoning a quarter of practice time in the junior classes. For Classes 1 and 2, logical reasoning is 10 of 40 questions. Pattern spotting, odd-one-out and simple sequences, done as games, are ideal.
Try a few critical thinking questions. From Class 3, five questions ask a child to apply ideas or pick a strategy. Talking through a problem aloud, “what do we know, what do we need?”, builds the habit.
Answer every question. With no negative marking, an unanswered question can only cost marks.
Use sample questions near the end. Unified Council publishes sample questions. In the last three weeks, do two timed practice sets in an hour each. Overall, five to seven weeks of two or three short sessions a week is plenty for most children. The maths prep guide has more by class.
Where daily practice fits
Maths and reasoning come up every day in Ado’s free daily quiz, along with science, English and GK: 8 questions in all, including a 60-second sprint. That daily rhythm builds the fluency and calm that a one-hour objective maths paper rewards. Students are ranked only against others the same age, and the Ado Rank builds from their three strongest subjects and never resets.
Good to know
Other school maths olympiads include SOF’s International Mathematics Olympiad and SilverZone’s International Olympiad of Mathematics. Compared with them, UIMO stops at Class 10, has a single paper with no later rounds, and offers an online version that students can register for directly.