Number Factors Factors 25 December 2021 Factors are

Number Factors

Factors 25 December 2021 Factors are numbers that divide into a number exactly 6 4 1 24 Factors of 24 8 3 2 12

Factors 25 December 2021 Usually we write factors in pairs Factors of 24 1 2 3 4 24 12 8 6

Factors 25 December 2021 Write down all the factors of… 12 1 12 2 3 6 4

Factors 25 December 2021 Write down all the factors of… 20 1 20 2 4 10 5

Factors 25 December 2021 Write down all the factors of… 28 1 28 2 4 14 7

Factors 25 December 2021 Write down all the factors of… 48 1 48 2 3 4 24 16 12

Independent Task Factor Spiders

Factor Spiders Solutions 25 December 2021 1 9 6 54 18 3 54 2 27 1 5 6 30 10 3 30 2 15

Factor Spiders Solutions 25 December 2021 10 1 9 15 6 90 90 30 3 2 45 1 9 63 7 21 63 3

Highest Common Factor (HCF) 25 December 2021 What is the Highest Common Factor (HCF) of 12 and 18? 1 4 12 3 6 12 2 1 6 18 3 9 18 2 The Highest Common Factor (HCF) of 12 and 18 is 6

Highest Common Factor (HCF) 25 December 2021 What is the Highest Common Factor (HCF) of 21 and 28? 1 7 21 3 7 1 28 21 4 14 28 2 The Highest Common Factor (HCF) of 21 and 28 is 7

Student Task Highest Common Factor

25 December 2021 Independent Task - HCF Find the HCF of the following pairs 36 60 60 144

HCF - Solutions 25 December 2021 9 4 6 1 36 36 12 3 2 18 6 10 12 1 5 60 60 15 2 4 30 20 3 The Highest Common Factor (HCF) of 36 and 60 is 12

HCF - Solutions 25 December 2021 12 16 9 1 18 144 8 2 144 24 72 6 3 36 4 48 6 10 12 1 5 60 60 15 2 4 30 20 3 The Highest Common Factor (HCF) of 144 and 60 is 12