Grade 4 Factors and Multiples Quest: Find Common Factors & Multiples

Sarah has 12 apples and 18 oranges. What are the common factors of the number of apples and oranges she has?

• 7, 14, 21

• 5, 10, 15

• 1, 2, 3, 6

• 4, 8, 12

Tom is organizing his toy cars. He has 20 red cars and 30 blue cars. What is the greatest common factor of the number of red and blue cars?

• 15

• 5

• 10

• 25

A baker is making cupcakes. He can bake 15 chocolate cupcakes or 25 vanilla cupcakes. What is the least common multiple of the two amounts?

• 75

• 60

• 45

• 30

In a classroom, there are 24 students who can be grouped into teams. What are the different ways to group them using common factors?

• 1, 2, 3, 4, 6, 8, 12, 24 teams (with respective sizes 24, 12, 8, 6, 4, 3, 2, 1)

• 1, 2, 5, 10 teams

• 7, 9, 11, 13 teams

• 5, 10, 15, 20 teams

Emily is planting flowers in rows. She has 16 tulips and 24 daisies. What is the greatest common factor of the number of tulips and daisies?

• 4

• 8

• 16

• 12

A music teacher has 8 guitars and 12 drums. What is the least common multiple of the number of guitars and drums?

• 30

• 20

• 24

• 36

At a party, there are 30 balloons and 45 party hats. What is the greatest common factor of the number of balloons and party hats?

• 10

• 25

• 20

• 15

A farmer has 36 chickens and 48 ducks. What is the least common multiple of the number of chickens and ducks?

• 72

• 108

• 144

• 96

Liam is arranging his books. He has 18 fiction books and 27 non-fiction books. What is the greatest common factor of the two amounts?

• 18

• 9

• 12

• 6

A gardener is planting 40 flowers and 60 shrubs. What is the least common multiple of the number of flowers and shrubs he is planting?

• 80

• 100

• 140

• 120