Factors and Multiples

Which is a factor of 12?

• 24
• 5
• 3
• 0.3

Which is a factor of 36?

• 72
• 5
• 4
• 17

Which is a factor of 15?

• 2
• 3
• 4
• 6

Is 2 a factor of 15?

• Yes
• No

Is 5 a factor of 80?

• Yes
• No

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 prime?

• 9
• 5
• 15
• 1

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

• 7
• 14
• 22
• 28

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

Which one is a multiple of 4?

• 33
• 22
• 18
• 24