Mastering GCF and LCM

What is the greatest common factor (GCF) of 36 and 48?

• 6

• 12

• 18

• 24

Find the least common multiple (LCM) of 5 and 7.

• 12

• 35

• 25

• 70

Calculate the GCF of 81 and 27.

• 9

• 27

• 3

• 81

What is the LCM of 8 and 12?

• 24

• 48

• 96

• 120

Determine the GCF of 14, 28, and 42.

• 7

• 14

• 21

• 28

What is the LCM of 9, 12, and 15?

• 180

• 360

• 60

• 90

Find the GCF of 100 and 250.

• 25

• 50

• 100

• 125

Calculate the LCM of 20 and 25.

• 50

• 100

• 200

• 500

What is the GCF of 64 and 96?

• 16

• 32

• 48

• 64

Determine the LCM of 11 and 22.

• 22

• 44

• 66

• 242