MathsYears 5–6Multiplication & Division

Prime numbers, prime factors and composite numbers

Know and use the vocabulary of prime numbers, prime factors and composite numbers; establish whether a number up to 100 is prime

What you'll learn

  1. 1

    Imagine 12 biscuits 🍪. Can you share them into equal groups? You can make 2 rows of 6, 3 rows of 4, or 4 rows of 3!

  2. 2

    Can you make equal groups of 7 biscuits? 🍪

  3. 3

    Try making equal groups of 13 biscuits. Tap to see if it works!

  4. 4

    Let's check if 11 is prime or composite. 🔍

  5. 5

    Which of these numbers is PRIME? (Hint: it can only be 1 × itself)

  6. 6

    Now try 15. Use the array to see if it's prime or composite. 🕵️

  7. 7

    What is 15? Is it prime or composite?

Practise Prime numbers, prime factors and composite numbers with Whizlo

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