GCSE Secondary Maths Age 13-17 - Number: Factors - Explained

The video tutorial explains how to find all the factors of 20, emphasizing that factors come in pairs. It starts with the often-overlooked factor 1 and its pair 20, then moves on to other factors like 2 and 10. The tutorial also discusses why certain numbers like 3 and 6 are not factors of 20. Finally, it outlines the scoring criteria for identifying factors, with marks awarded for finding three or more factors and all factors of 20.

What are all the factors of 20?

Explain the concept of factor pairs as mentioned in the text.

What is the corresponding factor pair for 1 in relation to 20?

Identify a factor of 20 that is an even number and explain why.

List all the factors of 20 and explain how you found them.