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Q: What is the RMO (Raffles Mathematical Olympiad)? A: The RMO (Raffles Mathematical Olympiad), previously called RIPMWC, is an annual maths olympiad for MOE primary school students run by Raffles Institution since 1996. It has two rounds: Round 1 (online, 20 MCQ, 60 min) and Round 2 (written at RI, 60 min). Registration is through MOE primary schools only - no individual/private entries.
TL;DR Registration is through MOE primary schools (no individual/private registration); always check RI’s official RMO page for current dates and downloads. RI states RMO (previously RIPMWC) started in 1996 and runs two rounds: Round 1 (online, 20 MCQ, 60 min) and Round 2 (written at RI, 60 min; Junior: 15 short-answer; Open: 7 short-answer + 4 show-working). No calculators are allowed, and Round 2 invitations/awards follow RI’s published rules for the current year.
Registration & Access: School-nominated - your child’s MOE primary school must register them. No individual or private entries. Ask your HOD Mathematics if your school participates. See our access guide for workarounds.
Latest RMO 2026 official links
RI's official RMO page is the page to check first for current-year results and downloads: ri.edu.sg/rmo. As of RI's 22 Apr 2026 update, the page lists:
2026 results links: Round 2 invitees and School Awards.
2026 user guides: Teacher Guide and Student Guide.
Past papers: 2025 and 2024 Round 1 questions and solutions.
Current rules: school-only registration, no calculators, English-language competition, and the Round 2 invitation thresholds.
Use those official downloads before third-party answer keys, because RI can update result files and guide PDFs during the competition cycle.
Tie It Back to Core Maths Prep
Use our IP Maths hub to reinforce olympiad training with syllabus-grade proof practice, WA planning tips, and links to other national contests.
1 What is RMO (official framing)
RI describes the Raffles Mathematical Olympiad (RMO) as a competition for MOE primary school students that started in 1996, with the aim of promoting interest in Mathematics and developing problem-solving abilities through friendly competition.
RI also states Round 2 invites are based on Round 1 performance (e.g., for 2026: top 2% or about top 40 students, whichever is lower, for Junior; and top 3% or about top 60 students, whichever is lower, for Open).
4 Rules (from RI)
RI’s rules include:
Registration is through MOE primary schools (no individual/private registration).
A registration fee applies (RI publishes the current amount on its RMO page).
No calculators are allowed for any round.
The language of the competition is English.
5 Awards (from RI)
RI publishes award bands by percentile for the current cycle (e.g., for 2026: top 2% High Distinction; next 13% Distinction; next 15% Merit; remaining Participation). RI also states team prizes go to the top 3 schools based on the total marks of their top 4 rankers (schools with fewer than 4 participants are not eligible).
6 Preparation blueprint (8 weeks)
Week
Focus drill
Mini-task
1-2
Times-table snap to 12×12
Build speed and accuracy on basic arithmetic (timed sets)
3-4
Geometry angles & parity
Solve 30 RIPMWC/RMO-style angle-chase Qs
5-6
Factors & remainders
Prove: if (a-b) divides (a^n-b^n)
7
Mock Round 1 (20 MCQ)
Mark & error-log in 60 min
8
Mock Round 2 (category-specific)
Hand-write full solutions under 60 min
Parents: start with RI’s official Round 1 past-year questions/solutions (linked on the RI RMO page) so your child trains to the exact format.
An RMO High Distinction or Distinction certificate is a recognised achievement that can strengthen a Direct School Admission (DSA-Sec) portfolio, particularly under the Mathematics talent domain at IP schools such as RI, HCI, NYGH, and NJC. Schools value evidence of olympiad-level problem solving because it signals readiness for accelerated secondary maths curricula. Include your certificate and, where possible, a short reflection on your preparation approach when assembling your DSA application. For a full breakdown of how competition awards translate across school tiers, see our Math Olympiad Awards and DSA guide.
8.1 Pathway Progression: RMO to SMO and Beyond
RMO targets Primary 4-6 students and serves as an early indicator of mathematical aptitude. Students who perform well at RMO often progress to the Singapore Mathematical Olympiad (SMO) in secondary school, which feeds into APMO and ultimately IMO selection. Building strong heuristic habits at the RMO stage - angle-chasing, parity arguments, and systematic case analysis - gives students a head start when SMO problems demand more formal proof techniques. For the full primary-to-international pathway, see our Maths Olympiad Pathway guide and the 2026 Competition Calendar.
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Parents - lock a 60-min RMO crash-clinic by late February to iron MCQ careless slips. Pupils - print last year's Round 1 paper, strip to T-shirt, set a 60 min timer, and try beating 18/20 tonight.
Award Cutoffs
RI publishes award bands by percentile after each cycle. Based on the 2026 published rules:
Award
Percentile
Typical Score Range
High Distinction (HD)
Top ~2%
Varies by year
Distinction (D)
Next ~13%
Varies by year
Merit (M)
Next ~15%
Varies by year
Honourable Mention
Next ~20%
Varies by year
Exact cutoff scores vary annually based on cohort performance. Always confirm the current year's thresholds on ri.edu.sg/rmo.
Core Topic Modules
Based on past paper analysis, RMO tests these five areas:
Arithmetic & Number Sense - divisibility, primes, number patterns
Geometry - angles, area, spatial reasoning
Number Theory - modular arithmetic, factors, remainders
Problem Solving - multi-step word problems, working backwards
These modules recur across both Round 1 (MCQ) and Round 2 (written). Use the official past papers to identify which modules your child finds hardest, then prioritise those in your preparation plan.
No calculators are allowed in either round. The language of competition is English. Round 2 invitations are based on Round 1 performance - approximately the top 2-3% of candidates (see Award Cutoffs above).
Past Papers & Resources
Raffles Institution publishes official RMO resources on the RI website:
Past papers and resources: Check the official RMO page below - RI publishes Round 1 questions and user guides there after each competition cycle.
Student user guide: Available on the RI RMO page - format details and instructions are updated each year.
RI RMO page:ri.edu.sg/rmo - check here for additional past papers or resources published for each cycle.
How to use past papers effectively:
Timed practice - simulate exam conditions (60 min, no calculator, no help).
Topic identification - after completing a paper, tag each question by topic module (see Core Topic Modules above) to find weak areas.
Error log - record every mistake with the question number, topic, and what went wrong. Review this log weekly.
RI has historically published Round 1 questions after the competition. Check the official page for current availability.
Frequently Asked Questions about RMO 2026
What is the RMO (Raffles Mathematical Olympiad)?
The RMO (Raffles Mathematical Olympiad), formerly known as RIPMWC (Raffles Institution Primary Mathematics World Contest), is an annual maths competition for MOE primary school students run by Raffles Institution since 1996. It has two rounds and covers Primary 4–6 students in Junior and Open categories.
What does RMO stand for?
RMO stands for Raffles Mathematical Olympiad. It was previously called RIPMWC (Raffles Institution Primary Mathematics World Contest).
What is the difference between RMO and RIPMWC?
RIPMWC and RMO are the same competition. RI renamed RIPMWC to the Raffles Mathematical Olympiad (RMO). The format (two rounds, P4–P6 students, no calculators) remains the same.
When is RMO 2026?
RMO 2026 dates are published annually on RI’s official RMO page at ri.edu.sg/rmo. Check the site or ask your school coordinator for the confirmed Round 1 and Round 2 schedule.
How do I register for RMO 2026?
Registration is through MOE primary schools only - individual or private registration is not available. Your school’s teacher-in-charge submits team entries. A registration fee applies; confirm the current amount on RI’s RMO page.
Where can I find RMO past papers and questions?
RI publishes official past-year Round 1 questions and user guides on the RMO page:
No calculators are allowed for either round. The language of competition is English.
What categories does RMO have?
Junior: Primary 4–5 students
Open: Primary 6 students
What are the RMO award bands?
For 2026, RI published: top 2% High Distinction, next 13% Distinction, next 15% Merit, remaining Participation. Cut-offs are published annually on RI’s RMO page - confirm current-year thresholds there.
What score do I need for RMO Round 2?
Round 2 invitation is based on Round 1 performance. For 2026, RI published: approximately the top 2% (or about top 40 students, whichever is lower) for Junior, and the top 3% (or about top 60 students, whichever is lower) for Open. These thresholds are set annually - confirm the current year’s criteria on ri.edu.sg/rmo.
What are the RMO medal cutoffs?
RMO does not use "medal" terminology - it uses High Distinction, Distinction, Merit, and Participation bands. These are percentile-based and published by RI after each competition. Historically: top 2% High Distinction, next 13% Distinction, next 15% Merit. Always check ri.edu.sg/rmo for the current year’s exact cutoffs.
Is RMO the same as the Singapore Mathematical Olympiad (SMO)?
No. RMO is run by Raffles Institution for primary school students (P4–P6). SMO is run by NUS for secondary school and JC students. Both are prestigious maths olympiads but target different age groups.
Can my child prepare for RMO without tuition?
Yes. RI publishes past Round 1 papers and solutions on its official RMO page, and these are the single best resource for understanding the question style and difficulty. Consistent practice with these papers - plus general primary olympiad problem books - is a proven preparation path. Many students who reach Round 2 prepare primarily through school programmes and self-study. For curated free resources, see our competition prep resources guide and Do You Need Tuition for Math Olympiad?.
Last updated 26 Jan 2026 - dates, fees, and cut-offs follow RI’s official RMO page and current-year documents.
