MathsYears 7–8Number

Factors, multiples and primes

Identify factors, multiples and prime numbers; find HCF and LCM; use prime factorisation

What you'll learn

  1. 1

    Imagine you have 12 biscuits 🍪. You want to share them into equal groups with no leftovers. The numbers that make equal groups are called FACTORS.

  2. 2

    Which of these is a factor of 12? That means it divides 12 exactly with no leftovers.

  3. 3

    Show me the factors of 12 by making equal groups.

  4. 4

    Let's find all the factors of 12 together.

  5. 5

    Now find the factors of 8. Which numbers divide 8 exactly?

  6. 6

    Now meet MULTIPLES! If you count in steps of a number, you get its multiples. 3, 6, 9, 12… are all multiples of 3.

  7. 7

    Hop along the number line to show the first 4 multiples of 3.

  8. 8

    What are the first 4 multiples of 4?

Practise Factors, multiples and primes with Whizlo

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