Mental Maths Olympiad Preparation Material for Class 1

Preparation Material of CREST Mental Maths Olympiad (CMMO) for Class 1

Number and Number Names

  1. Counting objects up to 20 in pictorial form & Pictorial representation using cubes (numbers up to 100)
  2. Number names (numbers less than 100)
  3. Step counting of 2, 3, 5 and 10 starting from any number (numbers up to 100)
  4. Representation in tens and ones up to 100
  5. Understand the use of words before, after, successor, predecessor, more than, less than (numbers up to 100)
  6. Arranging the given numbers in ascending and descending order (numbers up to 100)
  7. Identify and usage of signs >, < and = (numbers up to 100)
  8. Abacus representation (numbers up to 100)
  9. Use of place value (numbers up to 100)

Addition and Subtraction

  1. Solve problems on number bonds (numbers less than 100)
  2. Pictorial representation of addition and subtraction using number line
  3. Three digit addition (Problems on pictorial representation, missing numbers, carry over & commutative property of addition on numbers less than 100)
  4. Three digit subtraction (Problems on pictorial representation, missing numbers & borrowing on numbers less than 100)

Multiplication and Division

  1. Use of multiplication as repeated addition
  2. Use of multiplication tables to solve mathematical statements on multiplication (Tables from 2 to 10)
  3. Understanding division using grouping and pictorial representation
  4. Identify missing number in series - identifying if a certain number is multiples of 2, 3, 5 and 10
  5. Concept of half and one-half


  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


  1. Identification of horizontal, vertical and curved lines in a given figure
  2. Pattern recognition in a shapes series and identifying the next shape in the series
  3. Identify and count the number of a particular 2-D shape in a figure (circle, triangle, rectangle and square, etc.)
  4. Identify 3-D shapes (cuboid, cube, cone, sphere, cylinder, etc.)