LCM and GCF Quiz

Find the least common multiple (LCM) of 6 and 8.

• 20

• 16

• 12

• 24

Find the greatest common factor (GCF) of 12 and 18.

• 6

• 3

• 2

• 9

Find the LCM of 9 and 15.

• 30

• 60

• 75

• 45

Find the GCF of 24 and 36.

• 30

• 12

• 18

• 6

Find the LCM of 10 and 25.

• 50

• 100

• 5

• 15

Find the GCF of 16 and 20.

• 6

• 2

• 8

• 4

John has 7 apples and he wants to distribute them equally among his friends in such a way that each friend gets the same number of apples and no apple is left. If he invites 14 friends, how many apples will each friend get?

• 7

• 21

• 28

• 14

Tags

CCSS.3.OA.A.3

John and Mary are sharing a bag of 30 candies and a box of 45 chocolates. They want to divide these equally without breaking any candy or chocolate. What is the greatest number of pieces each person can get?

• 25

• 20

• 15

• 10

John and Mary are planning to buy bicycles. John's bicycle has 12 gears and Mary's bicycle has 20 gears. They want to synchronize their gear cycles. What would be the least common multiple (LCM) of gears they should consider to achieve this?

• 60

• 100

• 72

• 40

John and Mary are trying to split a piece of land. John wants 36 acres and Mary wants 48 acres. What is the greatest common factor of the land they can each have?

• 6 acres

• 18 acres

• 24 acres

• 12 acres