Factoring and Multiples Review LaFord

Which of these is a factor of 18?

• 4
• 5
• 36
• 3

Which is not a factor of 20?

• 4
• 2
• 5
• 40

What are the factors for 12?

• 1, 12

• 1, 2, 3, 4, 6, 8, 12

• 1, 2, 3, 4, 6, 12

• 2, 3, 4, 6

Match the following multiples

• multiple of 11

• 9

• multiple of 3

• 50

• multiple of 7

• 28

• multiple of 2

• 66

• multiple of 10

• 18

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

28, 35, 42, 49 and 56 are all multiples of which number?

• 7

• 3

• 12

• 8

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)

Find the Least Common Multiple (LCM) of 8 and 12

• 812

• 20

• 96

• 24

Which number is not a multiple of 9?

• 18

• 72

• 13

• 36

Is 23 a prime number?

• composite

• prime