LCM and GCF

Find the LCM of 12 and 18.

• 42

• 30

• 36

• 24

Find the GCF of 24 and 36.

• 6

• 12

• 18

• 30

Find the LCM of 15 and 25.

• 60

• 45

• 75

• 30

Find the GCF of 48 and 60.

• 6

• 24

• 12

• 36

Find the LCM of 8 and 10.

• 15

• 20

• 25

• 40

Find the GCF of 72 and 90.

• 12

• 24

• 36

• 18

Find the LCM of 21 and 28.

• 56

• 70

• 42

• 84

Find the GCF of 56 and 84.

• 14

• 28

• 42

• 70

Find the LCM of 16 and 20.

• 80

• 120

• 100

• 60

Find the GCF of 63 and 81.

• 7

• 12

• 15

• 9