Multiples and Factors

Which number is a factor of 10 ?

• 5

• 4

• 8

Which number is a factor of 24 ?

• 11

• 7

• 12

Which is a NOT a factor of 9?

• 1

• 0

• 9

• 3

A prime number is...

• a number that has only one factor.

• a number that has at least two factors.

• a number that has only two factors.

  (1 and itself)

Which number is NOT prime?

• 3

• 17

• 21

Sara has listed the first 4 multiples of 7 as:

7 14 22 28

Which one is incorrect?

• 7

• 14

• 22

• 28

What is the HCF of 8 and 10?

• 1

• 4

• 2

Find the highest common factor of 20 and 30

• 2

• 10

• 15

What is the LCM of 4 and 12?

• 4

• 16

• 12

Multiples of a number are ____________

• limited

• unlimited