Mental Maths Olympiad Prep Guide for Class 9

Preparation Material of CREST Mental Maths Olympiad (CMMO) for Class 9

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