Finding GCF and LCM of Numbers

What is the Greatest Common Factor (GCF) of 8 and 14?

• 4

• 8

• 6

• 2

Which of the following is the GCF of 21, 24, and 27?

• 4

• 3

• 2

• 1

What is the GCF of 21, 35, and 49?

• 9

• 7

• 5

• 3

Find the GCF of 12, 18, and 24.

• 2

• 6

• 4

• 3

What is the Least Common Multiple (LCM) of 5 and 6?

• 30

• 10

• 15

• 20

Which of the following is the LCM of 6 and 9?

• 12

• 15

• 18

• 21

Find the LCM of 6, 12, and 15.

• 45

• 30

• 60

• 75

What is the LCM of 3, 9, and 15?

• 60

• 45

• 30

• 15

A gardener has 27 pansies and 36 daisies. What is the greatest number of pansies that can be planted in each row?

• 12

• 3

• 6

• 9

If Inez waters her plants every 2 days and trims them every 15 days, after how many days will she do both again?

• 30

• 20

• 15

• 10