Mental Maths for Class 3 is an important subject to consider. This skill is not only important for solving Mathematical problems quickly, but it also helps in developing the brain and enhancing problem-solving skills.
Class 3 students are at the age of development, which requires building their confidence and accuracy in solving Mathematical problems. Mental Maths for class 3 requires students to use their memory, logic, and reasoning skills to solve problems, thereby helping in the development of the brain. This is especially important at an early age, as this is when students’ brains are most receptive to learning new things.
Whereas, introducing Mental Maths for class 3 students is an important step in helping them to develop their Mathematical skills and problem-solving abilities. By using games and activities, real-life situations, and flashcards, teachers can make Mental Maths an enjoyable and engaging learning experience for students.
By considering the importance of learning Mental Maths for class 3 in such a competitive life, CREST Olympiads (World’s Most Innovative Olympiad Exams) took an initiative for school students by introducing the Mental Maths competition for class 3 by the name of CREST Mental Maths Olympiad (CMMO). The exam is conducted at an international level with students participating from 60+ countries & 6000+ schools.
The exam is designed to assess students' logical abilities, aptitude, and ability to perform Mathematical operations, among other things. Furthermore, it aims to instill in students a sense of confidence and competitiveness, motivating them to work harder and perform better in other academic areas as well.
Other Important Information:
| Mode of Examination | Online |
| Mode of Registration | Individual and through schools |
| Exam Duration | 1 hour (60 minutes) |
| Type of Questions | Multiple Choice Questions (MCQs) |
| Levels of Examination | 2 Levels |
| Marking Scheme | Mental Maths Olympiad marking scheme |
>> Join CREST Olympiads WhatsApp Channel for latest updates.
a. Any board, any country: the Mental Maths Olympiad for class 3 takes them all. A school can enter its pupils, or a parent can do the registration directly.
b. Since children answer by themselves from Class 2 onwards, nobody sits beside a Class 3 child during the paper, and the webcam has to see the whole face from the first question to the last.
c. Kit list: a desktop, a laptop or a tablet larger than 11.5 inches (a Windows 8 or later device, a Mac or an iPad), a webcam that works and a dependable home connection. CREST recommends the latest Google Chrome as the browser; Edge or Firefox can be used instead, but never Safari. A phone cannot stand in for any of these.
d. Of all Class 3 candidates in Level 1 the top 66.67% move up to Level 2. A school registering more than 25 children in the class also gets its three highest school-registered scorers into Level 2.
e. Rs. 275 in India, or USD 15 elsewhere, pays for the exam and two online practice tests. Booking happens on the dashboard and every change to a booked slot costs Rs. 40.
1. Fractions join the mental work. Class 3 adds Fractions to the list, so children learn to compare one-third with two-thirds in their heads, and to order and add simple fractions, not only whole numbers.
2. Bigger numbers, faster. The prep guide moves from numbers below 100 to numbers below 1000 and stretches the tables from 2-10 to 2-20. Holding a three-digit number in the head while working on it is a real step up.
3. A Class 3 record to aim at. A Hall of Fame profile shows Mental Maths International Rank 1 in Class 3, in 2023-24. The same profile lists further CREST ranks in other subjects.
4. Unlike the usual textbook drill. CREST helps the writer improve, one Class 3 testimonial says, and feels very different from the books used at school.
Following are the steps to register for class 3 CREST Mental Maths Olympiad (CMMO) -
Step 1: Visit the Olympiad registration link.
Step 2: The registration form opens up.
Step 3: Fill in all the registration form details.
Step 4: Select the subject(s).
Step 5: Read the instructions carefully.
Step 6: Proceed to make the payment.
Step 7: Registration is complete.
Note: Schools looking to conduct the CREST Mental Maths Olympiad (CMMO) for class 3 can email us at info@crestolympiads.com or call/WhatsApp on +91-98182-94134.
The Mental Maths Olympiad syllabus for class 3 adds a sixth topic to last year's five: Number and Number Names, Addition and Subtraction, Multiplication and Division, Fractions, Measurement and Geometry.
Fractions is the only new name; the other five carry on from Class 2, and nothing is dropped. Inside the topics the numbers grow. The Class 3 prep guide works with numbers below 1000 in hundreds, tens and ones and in expanded form, tables from 2 to 20, factors and multiples, words such as dozen, score and century, and acute, obtuse, right and straight angles.
At 80 questions the paper is longer too while the hour stays the same. Marks total 100 from 60 one-mark Basique questions and 20 two-mark Avance questions, leaving 45 seconds for each question. Level 2 is a copy of this pattern and marks are never taken away for errors.
For the full detail, open the topic-by-topic guide for Class 3.
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Exam Dates |
Practice Test 2 Dates: 23rd and 24th June 2026 Level 1 Dates: 9th and 14th July 2026 Level 2 Dates: 7th and 8th August 2026 |
| Fee | INR 275 (India-based candidates)/ USD 15 (International candidates) |
Class 3 is when speed starts to matter: at 45 seconds a question there is little time to write anything down. Work on two things side by side.
First, the new numbers. Read and compare three-digit numbers aloud, split them into hundreds, tens and ones, and double or halve them. Learn the tables up to 20 a few at a time.
Second, fractions. Fold paper into halves, thirds and eighths, shade parts, and ask which shaded part is bigger. Add like fractions such as two-fifths and one-fifth without a pencil.
After that, the class 3 Mental Maths sample papers show the real question style. They ask for the product of 19 and 17, the difference between bags of 25 kg 225 g and 17 kg 875 g, and how many metres make 5 km. Time ten questions at a go, in about seven and a half minutes.
Round it off with the free trial. Workbooks for CREST Mental Maths are sold through the Olympiad books page, and these free Class 3 resources come from CREST:
Free practice for Class 3 Mental Maths Olympiad
Mental Maths Olympiad for other classes
Other olympiads for Class 3
Class 3 CREST Mental Maths Olympiad (CMMO) answer key dates can be checked on the website. Answer keys are released on the answer key dates shown on the exam schedule. Students who all appeared for the exam can only check the answer key.
Cut-off for class 3 CREST Mental Maths Olympiad (CMMO) can be checked by candidates online on the website.
The Class 3 Mental Maths Olympiad Level 1 results usually turn up within 10 days of the last Level 1 answer key date, and the Level 2 results within a month of the last Level 2 answer key date, for anyone signed in with the details from registration.
CREST ranks each child twice, once within one of five zones (East, West, North, South, International) and once worldwide. Using the Level 2 marks, medals go to the top 15% of students, Merit Certificates to the top 25% and Honourable Mention certificates to the top 60%. See Awards & Recognition for the full criteria. Achiever's Trophies go to the world's first three in Class 3.
Each challenged question in the answer key costs Rs. 125. Win it and the money comes back with 50 reward points credited too.
Awards are given to the participants who clear cut-off in CREST Mental Maths Olympiad (CMMO). These awards are usually in the form of Trophies, Medals, Merit Certificates, etc.
The awards serve as a recognition of the participant's hard work and dedication, and it also gives students a morale boost by highlighting their achievements. For more details, see the CREST Olympiad awards page.
1. What is Mental Maths for a 3rd grader?
Answer: For a third-grader, Mental Math typically involves addition, subtraction, multiplication and division of single-digit and two-digit numbers. Mental Math skills are important as they help to develop a student's number sense and increase their confidence in solving arithmetic problems.
2. How can I help my 9-year-old with Mental Math?
Answer: By encouraging a child to practice Mental Math regularly, one can easily teach Mental Maths to class 3 students. This can be easier through games, puzzles, or timed quizzes. Usage of visual aids such as number lines, charts, or graphs also helps a child to understand Mathematical concepts in a fun way.