Multiples and Factors

What are other multiples of 5?

• 16

• 18

• 20

• 25

Molly ate 31 grapes. Which correctly describes 31 as a prime number or a composite number and tells the number of factor pairs 31 has?

• 31 is a prime number because it has 0 factor pairs.

• 31 is a prime number because it has 1 factor pair.

• 31 is a composite number because it has 1 factor pair.

• 31 is a composite number because it has 2 factor pairs.

Find the least common multiple of 14, 21 and 7

• 24

• 28

• 42

• 7

Numbers which are multiplied to get another number are called:

• Factors

• Multiples

• Difference

• Product

What is the factor of every number?

• 0

• 1

• 10

• 2

Mrs. Hall's twenty-four students need to be grouped for a project. Which list shows all the different ways she could group her class so that each group has the same number of students?

• 2,4,6,8,10,12,14,16,20,24

• twenty-four

• 1,2,3,4,6,8,12,24

What is the HCF of 36 and 20?

• 12

• 18

• 9

• 4

What is the HCF of 850 and 680?

• 340

• 170

• 17

• 425

The HCF of 49 and 84 is:

• 3

• 14

• 21

• 7

What is the HCF of 190 and 100?

• 100

• 19

• 10

• 90