LCM and GCD with Prime Factorisation

Find the GCF:

• 1

• 2

• 8

• 12

Answer the following question by finding the GCF.

• 18

• 9

• 12

• 1

Answer the following question by finding the LCM.

• 90 minutes

• 30 minutes

• 1:45pm

• 1:00pm

What is the GCF of 7 and 15?

• 2

• 1

• 7

• 60

Find the LCM of 10 and 12.

• 2

• 20

• 1

• 60

Which answer would represent the GCF and Distributive Property of the numbers pictured?

• 12 ( 2 + 1 )

• 6 ( 2 + 1 )

• 6 ( 4 + 2 )

• 4 ( 6 + 3 )

Find the LCM of:

• 1

• 5

• 10

• 20

Find the LCM of:

• 60

• 1

• 30

• 3

Which answer would represent the GCF and Distributive Property of the numbers pictured?

• ( 9 + 21 )

• ( 1 + 3 )

• ( 3 + 7 )

• ( 3 + 9 )

GCF of 8 and 20

• 8

• 2

• 4

• 10