GCF and LCM

What is the least common multiple (LCM) of 4 and 10?

• 4
• 40
• 15
• 20

Find the GCF of 12 and 6. 

• 1
• 6
• 2
• 3

Find the LCM of each set of numbers. 
 3, 5 

• 15
• 20
• 30
• 33

What is the least common multiple (LCM) of 8 and 5?

• 50
• 40
• 5
• 8

GCF of 12 and 18

• 3
• 4
• 6
• 2

Which of the following is a multiple of 7?

• 14

• 17

• 22

Tags

CCSS.4.OA.B.4

What is the Greatest Common Factor of 40 and 100?

• 20

• 10

• 5

• 1

What is the GCF of 15 and 20?

• 2

• 0

• 1

• 5

What is the GCF of 9 and 4?

• 0

• 1

• 3

• 5

What is the GCF of 56 and 80?

• 8

• 4

• 2

• 1