Free Mental Maths Olympiad Class 12 Study Material

Preparation Material of CREST Mental Maths Olympiad (CMMO) for Class 12

Below is the Class 12 study material for the CREST Mental Maths Olympiad (CMMO). Class 12 is the highest class in the CMMO, which runs from Senior KG, and the links follow its seven official syllabus units. Each one opens a free CREST topic page.

What's new in Class 12

No new topics. The official Class 12 syllabus has the same seven units as Classes 9, 10 and 11, and this guide matches the Class 10 and 11 guides. The paper pattern is unchanged too.

That makes Class 12 a revision year for CMMO. Everything below will be familiar if you took the Olympiad in earlier classes.

Class 12 paper at a glance

• Total questions: 100
• Time: 60 minutes
• Total marks: 120
• Basique section: 80 questions, 1 mark each
• Avance section: 20 questions, 2 marks each

How to use this guide in Class 12

• Begin with a full timed paper, the Class 12 CMMO sample paper, and use the result to choose which of the seven groups below to revise first.
• Revise Mensuration and Geometry together: surface areas and volumes, heights and distance, areas of triangles, quadrilaterals and circles, and lines and angles.
• Give Algebra and Data Handling one short mixed set each week, so polynomials, quadratic equations, statistics and probability stay fresh.
• Keep Number System and Playing with Numbers sharp with short daily sets on simplification, divisibility, exponents and series from the free Class 12 Mental Maths worksheets.

Number System

1. Integers and Rational numbers
2. Simplification

Algebra

1. Polynomials
2. Quadratic Equations

Comparing Quantities

1. Time and Distance
2. Simple Interest
3. Compound Interest
4. Profit and Loss
5. Problems on Ages
6. Time and Work
7. Boats and Streams
8. Average and Percentage
9. Partnership
10. Ratio and Proportion

Geometry

1. Lines and Angles

Mensuration

1. Surface Area of Cube
2. Surface Area of Cuboid
3. Surface Area of Cylinder
4. Surface Area of Cone, etc.
5. Volume of Cube
6. Volume of Cuboid
7. Volume of Cylinder
8. Volume of Cone, etc.
9. Heights and Distance
10. Area of a Quadrilateral, Area of Triangle & Area related to Circles

Playing with Numbers

1. Number Series
2. Alphanumeric Series
3. Tests of Divisibility
4. Exponents
5. Factorisation

Data Handling

1. Statistics
2. Probability
3. Data Interpretation