LCM and GCF Quizizz

Calculate the GCF of 28 and 42.

• 6

• 7

• 14

• 21

Find the LCM of 15 and 20.

• 30

• 40

• 60

• 80

A gardener has 24 roses and 36 tulips. He wants to plant them in rows such that each row has the same number of flowers and only one type of flower. What is the greatest number of flowers that can be planted in each row?

• 6

• 8

• 12

• 18

Two friends are planning to meet at a park. One can visit every 4 days, and the other every 6 days. If they both visit today, in how many days will they meet again at the park?

• 8 days

• 10 days

• 12 days

• 14 days

The LCM of two numbers is always (a)   their GCF.

• The LCM of two numbers is always le
• The GCF of two numbers is always gr
• The LCM of two numbers is always eq
• The LCM of two numbers is always gr

Calculate the GCF of 32 and 48.

• 8

• 12

• 16

• 24

A farmer has 30 apples and 45 oranges. He wants to pack them in boxes such that each box has the same number of fruits and no fruit is left over. What is the greatest number of fruits that can be packed in each box?

• 5

• 10

• 15

• 20

Calculate the LCM of 8, 12, and 16.

• 24

• 48

• 96

• 144

Calculate the GCF of 18, 24, and 30.

• 2

• 3

• 6

• 12

Calculate the LCM of 10 and 15.

• 20

• 30

• 40

• 50