Factors _ Multiples _

Which choice lists all the factors for the number 24?

• 2, 3, 4, 6, 8, 12, 24
• 2, 3, 4, 6, 8, 12, 24, 36
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 4, 5, 6, 8, 12 ,24

List the first 5 multiples of 8

• 1, 2, 4, 8
• 8, 16, 25, 32, 40
• 8, 16, 24, 32, 40
• 8, 16, 24, 31, 40

What are the next three multiples?6, 12, 18, ___ ,___ ,___

• 24, 30, 34
• 24, 36, 42
• 24, 30, 36
• 22, 28, 34

Which are factors of 20?

• 2,10,5,4,1,20

• 3,5,7,9

• 40,80,100

• 15,25,35

Which is a multiple of 3

• 15

• 4

• 1

• 5

Multiples of 4

• 4,8,12,16,20

• 2,4,6,8

• 1,2

• 3,6,9

Joe has listed the first 4 multiples of 7 as: 
7   14    22     28
Which one is incorrect?

• 7
• 14
• 22
• 28

A prime number is...

• a number that has only one factor.
• a number that has at least two factors.
• a number that has more than two factors.
• a number that has only two factors.
  (1 and itself)

Which number is NOT prime?

• 3
• 7
• 17
• 21

Which number below is a common factor of both 24 and 36?

• 7

• 12

• 9

• 5