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Difficulty ranking: easiest to hardest
Competition Ladder by School Level
Which competition suits my child?
Head-to-head comparisons
Q: Which maths olympiad should my child start with? A: Start with SASMO or SMKC for exposure - they are open-entry, curriculum-adjacent and confidence-building. Once your child is comfortable, move to RMO or NMOS for a bigger challenge, then APMOPS if they are ready for the toughest primary-level contest. Secondary and IP students should look at SMO and AMC.
TL;DR There is no single "best" competition - the right one depends on your child's level, goals, and readiness. This guide ranks every major maths competition in Singapore from easiest to hardest, compares them head-to-head, and maps each one to its DSA value. Use the decision flowchart below to narrow your shortlist in under a minute.
If you have...
Read this first
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First-timers should usually start with SASMO or SMKC.
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Check difficulty tier, school level, DSA value, SASMO, SMKC, SMC, RMO, NMOS, APMOPS, SMO, AMC, registration type, and child readiness.
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The right olympiad depends on current confidence, not prestige alone: start with accessible contests, then move up only when your child enjoys the challenge.
Concrete example
A P5 student already doing well in SASMO can ask the school about NMOS or RMO, while a first-timer should not jump straight to APMOPS.
Best next step
Use the difficulty table to choose one reachable contest and one stretch contest.
Difficulty ranking: easiest to hardest
The table below groups competitions into four tiers. Difficulty is relative and based on general parent and educator feedback - individual experiences may vary.
The SASMO → SMO gap: Forum discussions consistently describe this as a significant jump. SASMO rewards careful MCQ reasoning; SMO demands proof-based thinking, deep number theory, and sustained problem-solving across 150 minutes. Students who attempt SMO without prior olympiad training typically find the difficulty "completely different." Build up through NMOS or RMO first if your goal is a strong SMO result.
Which competition suits my child?
Use this step-by-step guide to narrow your options.
Step 1 - Has your child done a maths competition before?
No → Start with SASMO or SMKC. Both are open-entry, low-pressure and let your child experience timed problem-solving without a steep difficulty cliff.
Step 2 - Is your child strong in school maths and wants more of a challenge?
Yes, primary level → Register for NMOS (P5) or RMO (P5–P6) through the school. These require above-syllabus skills and consistent practice.
Both sit in the "entry" tier and welcome first-timers. SASMO is generally considered slightly more structured, with questions aligned closely to the school syllabus plus a small stretch component. SMKC uses a pure MCQ format with no penalty for wrong answers, which some parents find less stressful. Either one is a solid first competition - pick whichever fits your child's schedule.
NMOS vs RMO - which matters more for DSA?
NMOS is organised by NUS High and is widely recognised across most IP schools for DSA Math applications. RMO, run by Raffles Institution, carries strong signalling value especially for RI/RGS admissions. If your child is targeting a specific IP school, check that school's DSA criteria - many accept results from both. Doing well in either is a credible achievement.
APMOPS vs NMOS - which is harder?
APMOPS is harder. The APMOPS invitation round is generally regarded as the most demanding primary-level maths paper in Singapore. NMOS is already above syllabus, but APMOPS pushes further into creative problem-solving and proof-style reasoning. Most students who perform well at APMOPS have already medalled at NMOS or RMO.
DSA value by competition
The table below gives a general sense of how IP schools view each competition in DSA Math applications. This is indicative - each school sets its own criteria, and results are only one part of a DSA portfolio.
Especially relevant for students considering US university applications
Always verify the latest DSA criteria on each school's official admissions page. Medal thresholds and cutoff percentiles change yearly - check the organiser's site before drawing conclusions from older data.
Competitions reward students who have a solid grasp of core maths concepts - speed, accuracy and problem-solving all stem from strong fundamentals. Whether your child is entering their first SASMO paper or preparing for APMOPS, the best investment is making sure the basics are rock-solid.
Explore our IP Maths tuition hub to see how structured tuition builds the kind of mathematical fluency that pays off in both school exams and competitions.
Which is the easiest maths competition in Singapore?
SASMO and SMKC are generally considered the most accessible. Both are open-entry, curriculum-adjacent and designed to be encouraging rather than intimidating. SMKC's no-penalty MCQ format makes it particularly low-risk for nervous first-timers.
Can my P2 child join a maths competition?
Yes. Both SASMO and SMKC accept students from P1 onwards. The papers for lower primary are intentionally simpler and focus on logical thinking rather than advanced arithmetic.
How many competitions should my child do in a year?
Quality matters more than quantity. One or two well-prepared competitions per year is plenty for most students. Spreading too thin leads to burnout and shallow preparation. Pick the competition that best matches your child's level and dedicate proper practice time to it.
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 credential at the primary level. For secondary-to-JC DSA, SMO results are the primary signal. See our DSA Math guide for details.
Should my child do NMOS or SASMO 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 comfortable and scoring well, NMOS is a natural next step in P5.
Is APMOPS harder than NMOS?
Yes. APMOPS - especially the invitation round - is widely regarded as the hardest primary-level maths competition in Singapore. Most students who do well at APMOPS have already performed strongly 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. RMO is organised by Raffles Institution and targets P5–P6 students. Both are above-syllabus and school-registered. The main practical difference is that RMO results carry particular weight for RI/RGS DSA, while NMOS is broadly recognised across most IP schools.
Do competition results expire for DSA applications?
Schools typically consider results from the most recent one to two years. A Gold medal from P4 will carry less weight by the time your child applies for DSA in P6. Focus on achieving strong, recent results in the year before or during the DSA application window.
Is it worth joining AMC if we are staying in Singapore?
AMC is most valuable if your child is considering US university applications in the future - it is a well-known benchmark in American admissions. For purely local DSA purposes, NMOS, RMO and SMO carry more direct recognition. That said, AMC participation does no harm and can broaden your child's competition experience.
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 in Singapore.
