Factors, Multiples, Prime and Composite

Which number is prime?

• 13
• 15
• 18
• 21

List the first 5 multiples of 4

• 20
• 4 8 12 16 20
• 1, 2, 4
• 4, 8, 12, 16, 20, 24

Which shows ALL of the factors of 14?

• 1, 14
• 2, 7
• 1, 2, 7, 14
• 1, 28

8, 12, 16, 20, and 24 are all multiples of ___.

• 3
• 6
• 4
• 9

What is the first multiple of 10?

• 0
• 10
• 20
• 30

Which one shows ALL of the factors of 6?

• 1, 6, 12
• 1, 2, 3, 6
• 1, 2, 3,
• 1, 6

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 first 10 multiples of 7?

• 7, 14, 21, 28, 35, 41, 49, 56, 63, 70
• 7, 14, 28, 35, 42, 49, 56, 63, 70, 77
• 7, 14, 21, 28, 35, 42, 49, 56, 63, 70
• 7, 14, 21, 28, 42, 49, 56, 63, 70, 77

What are the multiples of 9?

• 9, 12, 15, 18, 21
• 9, 18, 27, 36, 45, 54
• 3, 6, 9, 12, 15, 18
• 9, 19, 29, 39, 49, 59

Is 3 a prime number?

• Yes, because it has more than one factor pair.
• Yes, because it only has one factor pair.
• No, because it has more than one factor pair.
• No, because it has only one factor pair.