Overview
Factors and Multiples

Prime Numbers and Prime Factorisation

 Video Tutorial

Key Aspects:
  • Properties of Prime Numbers
  • Examples of Prime and Non-Prime Numbers
  • Prime Factorisation: Division Method
  • Prime Factorisation: Factor Tree Method
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 Revision Cards

1) Properties of Prime Numbers

Explanation and example of prime numbers, stating that 2 is the smallest prime number.

2) Prime Numbers Below 20

Cartoon dolphin showing prime numbers under 20, which are 2, 3, 5, 7, 11, 13, 17, and 19.

3) Prime Factorisation: Division Method

Prime factorisation of 90 using the division method step by step.

4) Prime Factorisation: Factor Tree Method

Prime factorisation of 90 using the division method step by step.

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 Exercises

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