KS2 Primary Maths Age 13-17 - Calculations: Factors, Multiples and Primes - Explained

The video tutorial explains how to identify factors of 15 and 30, emphasizing the concept of factor pairs. It demonstrates the process of listing factors for both numbers and highlights the factors of 30 that are not factors of 15. The tutorial concludes with a brief discussion on the marking scheme for correctly identifying these factors.

Which of the following is a factor of 15?

• 6

• 4

• 3

• 2

What is a factor pair of 30?

• 3 and 10

• 1 and 15

• 2 and 15

• 4 and 8

How many factors does the number 30 have?

• 6

• 10

• 8

• 4

Which number is a factor of 30 but not a factor of 15?

• 5

• 10

• 15

• 3

Which of these is not a common factor of 15 and 30?

• 3

• 6

• 1

• 5