CREST Mental Maths Olympiad (CMMO) 2026-27
CMMO is the mental maths olympiad that CREST Olympiads runs for Sr KG to Class 12. Children who do well in Level 1 go on to Level 2.
When is CMMO 2026-27?
Level 1: 9 Jul 202614 Jul 2026
Level 2: 7-8 Aug 2026 (held).
Online from home on a computer or laptop. Student books a slot between 11 AM and 7 PM IST, at least 2 days ahead.
How do I register my child, and what does it cost?
Parents register directly online, or through a school. Fee: ₹275 per subject (includes 2 online practice tests). Outside India: US$15 per subject.
What is in the paper?
Negative marking: none since 2025. Language: English.
What is the syllabus?
School syllabus as an outline. Some questions test advanced understanding.
The topics, class by class, as the organiser lists them:
Class 1
Number and Number Names · Addition and Subtraction · Multiplication and Division · Measurement · Geometry
Class 2
Number and Number Names · Addition and Subtraction · Multiplication and Division · Measurement · Geometry
Class 3
Number and Number Names · Addition and Subtraction · Multiplication and Division · Fractions · Measurement · Geometry
Class 4
Number and Number Names · Addition and Subtraction · Multiplication and Division · Fractions · Measurement · Geometry
Class 5
Knowing our numbers · Integers · Fractions and Decimals · Playing with Numbers · Understanding Elementary Shapes · Mensuration · Data Handling and Symmetry · Comparing Quantities
Class 6
Knowing our numbers · Integers · Fractions and Decimals · Algebra · Playing with Numbers · Understanding Elementary Shapes · Mensuration · Data Handling and Symmetry · Comparing Quantities
Class 7
Number System · Algebra · Square and Square Roots · Cube and Cube Roots · Comparing Quantities · Mensuration · Playing with Numbers · Data Handling and Symmetry · Geometry
Class 8
Number System · Algebra · Square and Square Roots · Cube and Cube Roots · Comparing Quantities · Mensuration · Playing with Numbers · Data Handling and Symmetry · Geometry
Is there a Level 2, and who goes?
Two levels.
- Top 55.56% of each class in Level 1
- Nursery to Class 1: 60% or more
Cut-off: Published for each declared exam on CREST's Awards and 'Cut-off & Ranking Criteria' pages. Ranks are given in 5 zones: East, West, North, South and International.
How does my child get the admit card?
No admit card: the exam is online. Log in to the CREST dashboard and book a slot at least 2 days ahead. The 'Click To Take Exam' button opens 10 minutes before the slot. Changing a slot costs ₹40.
Is there an official CMMO answer key?
Shown only on fixed dates: Level 1, 17-18 Jul 2026. Level 2, 11-12 Aug 2026. A question can be challenged on the answer-key page for ₹125, refunded if the challenge is right.
When do results come, and what can my child win?
Level 1 results within 10 days of the last Level 1 answer-key date (where there is a Level 2). Final results within one month of the last answer-key date.
- Nursery to Class 1: 60% or more in the final exam: Star Medal and Merit Certificate
- Classes 2 to 12: international top 3 per class and subject: Achiever's Trophy
- School top 3 (schools with 25 or more students in a class): Gold Medal
- 96 percentile and above or zonal ranks 1 to 10: Gold Medal
- 93 to 96 percentile: Silver Medal
- 90 to 93 percentile: Bronze Medal
- Top 25%: Merit Certificate
- Top 25 to 50%: Honourable Mention
- Every online participant: digital certificate
Where can I find CMMO sample papers and previous year papers?
A free trial test (Practice Test 1), the same as the real exam, after logging in.
Anything else to know?
Held once a year, in the summer: the 2026 rounds are over, and the 2027 dates are not out yet.
From CREST's own website, 25 Oct 2026.
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