Factors S3 HW1

Complete the Factor tree

f

c

d

2

4

6

15

3

5

Common prime factors of 12 and 16 are

• 2,3

• 2,2

• 3,3

• 4,3

Common factors of 18 and 24 are:

• 1,2,3,4,6

• 1,2,3,6

• 1,2,3,6,8

• 1,2,4,6,8

Find the common factors of 30 and 45:

• 1,3,5,15

• 1,2,3,5,6,10,15

• 1,3,5,9,15

• 1,3,5,10,15

What are the common prime factors of 20 and 25?

• 1,5

• 3,5

• 2,3

• 5,5

Identify the common factors of 36 and 48:

• 1,2,3,4,6,12

• 1,2,3,4,6,8,12

• 1,2,3,4,6,8,10,12

• 1,2,3,4,6,8,10,12,14

Complete the factor tree

d

g

3

6

12

21

2

7

8

9