GCF and LCM

Emma is planning a party and wants to buy packs of balloons. One pack contains 4 balloons and another pack contains 10 balloons. What is the least number of balloons she can buy if she wants an equal number of balloons from each pack?

• 4

• 40

• 15

• 20

Nora has 12 apples and Priya has 6 apples. They want to divide their apples into groups of equal size without any apples left over. What is the largest number of apples that can be in each group? 

• 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

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

Tags

CCSS.4.OA.B.4

Which of the choices is a factor of 10?

• 2
• 4
• 6
• 20

Tags

CCSS.4.OA.B.4

GCF (25, 15)

• 5
• 10
• 15
• 20

What is the greatest common factor (GCF) of 16 and 24?

• 16

• 12

• 8

• 4