Which Singapore math olympiad should your child join? NMOS vs RMO vs SASMO vs Math Kangaroo compared (2026)
Study guide/
Which Singapore math olympiad should your child join? NMOS vs RMO vs SASMO vs Math Kangaroo compared (2026)
In one line
There is no single "best" competition.
Key points
The right one depends on your child's level, confidence, and goals.
This guide compares every major maths competition in Singapore side by side - difficulty, DSA value, cost, and who should enter - then maps a recommended pathway from P1 to JC.
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Read in layers
1 second
Read the summary above.
10 seconds
Scan the first few sections below.
100 seconds
Jump into the section that matches your decision.
Quick comparison table
NMOS deep-dive
RMO deep-dive
SASMO deep-dive
Q: Which maths olympiad should my child start with in Singapore? A: If your child has never done a competition, start with SASMO or SMKC - both are open-entry and confidence-building. In P5, move to NMOS or RMO for a real challenge. If your child medals there, APMOPS is the toughest primary-level contest. Secondary students should target SMO.
TL;DR There is no single "best" competition. The right one depends on your child's level, confidence, and goals. This guide compares every major maths competition in Singapore side by side - difficulty, DSA value, cost, and who should enter - then maps a recommended pathway from P1 to JC. Scroll to the quick comparison table to see everything at a glance, or jump to any individual competition for a deeper look.
If you have...
Read this first
1 second
SASMO and SMKC are entry points; NMOS, RMO, APMOPS, and SMO are bigger signals.
10 seconds
Check eligibility, difficulty, DSA value, cost, school registration, private access, NMOS, RMO, SASMO, APMOPS, SMKC, SMO, and AMC.
100 seconds
Build a pathway by level: exposure first, then primary-school challenge, then secondary proof-based contests if your child keeps enjoying it.
Concrete example
A P5 student aiming for IP DSA should ask whether the school enters NMOS or RMO before relying only on open-entry medals.
The National Mathematical Olympiad of Singapore (NMO-sigma) is run annually by NUS High School of Mathematics and Science in partnership with the Singapore Mathematical Society. It targets Primary 5 students only. From 2024 onwards, the format is a single round of 35 questions - no separate Heat and Special rounds as in earlier years.
Who should enter
NMOS suits P5 students who are comfortable with school maths and ready for questions that go beyond the MOE syllabus. If your child regularly finishes school work quickly and enjoys puzzles, NMOS is the natural next step after SASMO or SMKC.
Registration
Schools register students directly; there is no individual entry. Ask your HOD Mathematics if your school participates. If your school does not take part, see our access guide for workarounds.
What DSA panels think
NMOS is one of the most broadly recognised primary-level maths competitions for DSA-Sec. Several IP schools - including NUS High, Hwa Chong, and Raffles - regard a strong NMOS result (Gold or top percentile) as a meaningful data point in Mathematics talent applications. It is not a guarantee of admission, but it is a credible signal that admissions panels are familiar with.
The Raffles Mathematical Olympiad (formerly RIPMWC) has been run by Raffles Institution since 1996. It targets MOE primary school students across two categories: Junior (P4–P5) and Open (P6). The competition has two rounds - Round 1 is an online 20-question MCQ paper (60 min) held at the student's primary school, and Round 2 is a written paper held at Raffles Institution.
Who should enter
RMO is suited to strong primary students who can handle above-syllabus problems. The Junior category (P4–P5) makes RMO one of the few competitions accessible to P4 students at an intermediate difficulty level - making it a useful stepping stone between SASMO and NMOS.
Open vs invitational
RMO Round 1 is open to all MOE primary schools that choose to register. Round 2 invitations go to top performers from Round 1. This means entry is open, but progression is merit-based.
What DSA panels think
RMO results carry particular weight for Raffles Institution and Raffles Girls' School DSA applications - unsurprisingly, since RI runs the competition. Other IP schools also recognise RMO High Distinction as a strong credential. If your child is targeting RI/RGS specifically, RMO results are especially relevant.
SASMO (Singapore and Asian Schools Math Olympiad) is one of the largest maths competitions in Asia, with over 400,000 past participants from more than 40 countries. It is run by SIMCC (Singapore International Math Contests Centre) and covers Grades 1 through 12. The paper uses an MCQ format with no calculator allowed.
Why it is the best entry point for beginners
SASMO deliberately bridges school maths and olympiad thinking. Questions are curriculum-adjacent with a stretch - designed so that a well-prepared student who knows their school syllabus can score decently, while the harder questions introduce olympiad-style reasoning. This makes it far less intimidating than NMOS or APMOPS for a first-timer.
SASMO also accepts P1 and P2 students, which means your child can gain competition experience years before the high-stakes P5 window.
Registration
Parents can register directly through SIMCC's registration form at form.simcc.org - no school nomination required. Schools can also register students in bulk. This open-entry model is one of SASMO's key advantages: every child can participate, regardless of whether their school runs a maths CCA.
DSA value - an honest assessment
SASMO Gold is a useful supporting credential in a DSA portfolio, but it is rarely a differentiator on its own. The large participant base means medals are more common than in NMOS or RMO. Schools understand this. A SASMO Gold alongside an NMOS or RMO medal strengthens a portfolio; a SASMO Gold alone is not enough to carry a DSA application.
APMOPS began in 1991 as the Hwa Chong Maths Challenge and was renamed in 1993. It is hosted by Hwa Chong Institution (HCI) and now spans 13 partner territories across the Asia-Pacific. APMOPS has two stages: Round 1 is a 30-question online paper open to school-registered students, and the Invitation Round (IR) is a 14-question, 100-mark, 2-hour written paper sat on-site at HCI - open only to the top 50 Singapore scorers from Round 1.
Who should enter
APMOPS Round 1 is accessible to strong P4–P6 students, but the Invitation Round is widely regarded as the most demanding primary-level maths paper in Singapore. Most students who perform well at APMOPS have already medalled in NMOS or RMO. If your child has not yet entered those competitions, APMOPS Round 1 can still be a valuable experience, but realistic expectations are important.
What DSA panels think
An APMOPS Invitation Round result is the single strongest primary-level competition credential for DSA-Sec. The small, merit-filtered participant pool (top 50) means any result at this stage signals exceptional ability. HCI, RI, NUS High, and NYGH all recognise APMOPS IR results highly.
SMKC is the Singapore leg of Mathematical Kangaroo, an international competition active in over 70 countries. It is run by SIMCC and covers P1 to JC2 across multiple grade bands. The paper contains 24 to 30 MCQs (depending on level), is 75 to 90 minutes long, and uses a no-penalty marking scheme.
Why it works as a low-stakes first experience
Math Kangaroo is designed to be enjoyable rather than intimidating. The MCQ format with no penalty for wrong answers means anxious first-timers can attempt every question without fear. The international framing - participating in the same competition as students in France, Germany, and Australia - can feel motivating for children who respond to a sense of global community.
Registration
Open entry - register through your school or via mathkangaroo.sg. Individual registration is available if your school does not participate.
DSA value
SMKC Gold adds breadth to a DSA portfolio and signals international benchmarking, but it carries similar weight to SASMO: useful as supporting evidence, not a standalone differentiator. Schools are aware of the large participant base and accessible difficulty level.
The Singapore Mathematical Olympiad is the main national maths competition for secondary and JC students. It is run by the Singapore Mathematical Society and has three categories:
Junior - Secondary 1 and 2
Senior - Secondary 3 and 4
Open - Secondary 1 to JC 2 (never attended tertiary education full-time)
Round 1 is a 2.5-hour written paper with MCQ and short-answer questions. The top 10% are invited to Round 2, which is a longer paper requiring full written solutions - 3 hours for Junior, 4 hours for Senior and Open.
Who should enter
SMO is the natural continuation for secondary/IP students who enjoyed NMOS or APMOPS in primary school. It is also the gateway to national team selection - strong SMO performers are identified for training camps and selection tests that ultimately determine Singapore's APMO and IMO teams.
DSA value at secondary level
For secondary-to-JC DSA or IP internal progression, SMO results are the primary competition signal. JC and IB schools value strong SMO results in Mathematics talent applications.
There is no rigid pathway - every child is different. But based on competition eligibility windows and typical readiness, this is a sensible progression for a child who enjoys maths:
P1–P2: Exposure
Enter SASMO or SMKC for a low-pressure first experience.
Focus on whether your child enjoys the process, not on the result.
No structured training is needed at this stage.
P3–P4: Building foundations
Continue with SASMO and/or SMKC to build familiarity with timed problem-solving.
RMO Junior opens from P4 - consider entering if your child is scoring well in SASMO and wants more challenge.
This is the question Singapore parents ask most - and the honest answer is that most children do not need paid tuition for maths olympiad.
When self-study is enough
If your child has genuine interest, access to past papers, and a school that runs a maths CCA or training programme, self-study is typically sufficient. Consistent weekly practice with official past papers and a good problem-solving book does more than most tuition programmes. Many parents on forums like KiasuParents have observed that for students with real aptitude, self-practice builds exactly the skills that competitions test - persistence, pattern recognition, and creative reasoning.
When external help may be useful
Paid tuition or a short workshop may add value in specific situations: your school does not offer a maths CCA, your child is entering a competition like NMOS or APMOPS for the first time with limited preparation time, or you want structured guidance beyond what books can provide. Group classes at reputable centres typically cost $50–70 per hour.
Red flags to watch for
Be cautious of centres that advertise unrealistic medal rates, quietly remove weaker students before results are published, or use high-pressure sales tactics. A good centre should be transparent about its methodology, class size, and actual track record. Ask for specifics, not just marketing claims.
Which is the easiest maths competition in Singapore?
SASMO and SMKC are the most accessible. Both are open-entry, curriculum-adjacent and designed to encourage rather than intimidate. SMKC's no-penalty MCQ format is particularly low-risk for nervous first-timers.
Which competition helps DSA the most?
For primary-to-secondary DSA, NMOS and RMO carry the most weight. An APMOPS Invitation Round result is the strongest single primary-level credential. For secondary-to-JC DSA, SMO is the primary signal. See our detailed DSA and Math Olympiad Awards guide.
Is APMOPS harder than NMOS?
Yes. The APMOPS Invitation Round is widely regarded as the most demanding primary-level maths paper in Singapore. Most students who do well have already medalled in NMOS or RMO.
What is the difference between NMOS and RMO?
NMOS is organised by NUS High School and is open to P5 students only. RMO is organised by Raffles Institution and targets P4–P6 across Junior and Open categories. Both are above-syllabus and school-registered. The main practical difference: RMO results carry particular weight for RI/RGS DSA, while NMOS is broadly recognised across most IP schools. Doing well in either is a credible achievement.
Can my P2 child join a maths competition?
Yes. SASMO and SMKC accept students from P1. The papers for lower primary focus on logical thinking rather than advanced arithmetic.
How many competitions should my child do in a year?
One or two well-prepared competitions per year is plenty for most students. Quality of preparation matters far more than quantity of entries. Spreading too thin leads to shallow practice and potential burnout.
Do competition results expire for DSA?
Schools typically consider results from the most recent one to two years. A P4 medal will carry less weight by the time your child applies for DSA in P6. Focus on achieving strong, recent results close to the DSA application window.
Should I do SASMO or NMOS first?
If your child has never done a competition, start with SASMO. It builds confidence and exposes them to timed problem-solving without a steep difficulty spike. Once they are scoring well, NMOS is the natural next step in P5.
Where can I see all competition dates?
Check our 2026 Competition Calendar for registration windows, paper dates and result timelines across all major maths and science competitions.
Competition details in this guide are drawn from the official organiser pages listed below. Dates, fees, formats and award bands can change yearly - always verify against the latest official information before registering or making preparation decisions.
