Free Mental Maths Olympiad Class 4 Study Material

Preparation Material of CREST Mental Maths Olympiad (CMMO) for Class 4

This is the Class 4 study material for the CREST Mental Maths Olympiad (CMMO). The links are sorted under the six official Class 4 syllabus units, from Number and Number Names to Geometry, and each one opens a free CREST topic page you can work through at your own pace.

What's new in Class 4

Nothing new is added. The official Class 4 syllabus has the same six units as Class 3, the topic list below is the same, and the paper pattern is the same. Class 4 is a second year on this material, a chance to make three-digit numbers, tables up to 20 and simple fractions automatic.

It is also the last year on these six units. From Class 5 the CMMO syllabus switches to new units such as Integers, Fractions and Decimals and Comparing Quantities, and the paper grows to 100 questions.

Class 4 paper at a glance

• Length: 80 questions, 60 minutes, 100 marks.
• Sections: Basique with 60 one-mark questions, Avance with 20 two-mark questions.
• Taken alone at home with the webcam on; Level 2 uses the same pattern.

How to use this guide in Class 4

• Use the list as a checklist. Tick each topic once your child can answer it without writing anything down, and come back to the unticked ones.
• Give the Measurement group regular practice. Converting units of length, weight, capacity and time and working with money both ways (for example kilograms to grams and back) is quick to drill.
• Revise the vocabulary topic in Multiplication and Division: doubles, thrice, dozen, score and century.
• In Fractions, compare and order fractions with different numerators, such as two-fifths and four-fifths, until the answer comes without drawing.
• Time a set from the free Class 4 Mental Maths worksheets and a full Class 4 CMMO sample paper to practise keeping to 45 seconds a question.

Number and Number Names

1. Representation in expanded form (numbers less than 1000)
2. Number names (numbers less than 1000)
3. Representation in hundreds, tens, and ones (numbers less than 1000)
4. Pictorial representation using cubes (numbers up to 1000)
5. Arranging the given numbers in ascending and descending order (numbers up to 1000)
6. Identify and usage of signs >, < and = (numbers up to 1000)
7. Abacus representation (numbers up to 1000)
8. Step counting of numbers starting from any number (numbers up to 1000)
9. Use of place value (numbers less than 1000)
10. Play with patterns
11. Games with numbers

Addition and Subtraction

1. Three digit subtraction (Problems on pictorial representation, missing numbers & borrowing on numbers less than 1000)
2. Three digit addition (Problems on pictorial representation, missing numbers, carry over & commutative property of addition on numbers less than 1000)
3. Solve problems on number bonds (numbers less than 1000)

Multiplication and Division

1. Use of multiplication tables to solve mathematical statements on multiplication (Tables from 2 to 20)
2. Understanding division using grouping and pictorial representation
3. Understanding of words doubles, half, thrice, three times, dozen, pair, score, century etc. to solve multiplication and division problems
4. Use of number bonds to solve problems of multiplication and division
5. Understanding and identifying factors and multiples of given numbers

Fractions

1. Understanding fractions using pictorial representations (one-third, two-thirds, one-eighth, two-fifth etc.)
2. Arrange given fractions in ascending or descending order
3. Identification and usage of signs >, < and = for given fractions
4. Like Fractions Addition with same denominator
5. Like Fractions Subtraction with same denominator

Measurement

1. Conversion of Unit of Measurement - (Length, Weight, Capacity, Time)
2. Money
3. Reading measurement in pictorial problems: Using a ruler, weighing balance, graduated container and clock

Geometry

1. Identification of acute, obtuse, right and straight angles
2. Identify and count the number of a particular 2-D shape in a figure (circle, triangle, rectangle and square, etc.)
3. Identify 3-D shapes (cuboid, cube, cone, sphere, cylinder, etc.)
4. Pattern recognition in a shapes series and identifying the next shape in the series