Math Challenge

Which number is a factor of 6?

• 12
• 2
• 8
• 10

Which number is a multiple of 5?

• 16
• 29
• 40
• 32

Which answer choice lists all the factors for 27?

• 3, 9
• 1, 3, 9, 27
• 1, 3, 6, 9, 12, 27
• 1, 3, 6, 9, 18, 27

Which of the following are multiples of 4?

• 1, 2, 4
• 8, 12, 16, 20
• 2, 4, 6, 8, 12
• 1, 2, 3, 4, 

Which is a factor of 12?

• 24
• 5
• 3
• 0.3

Which is a NOT a factor of 12?

• 1
• 3
• 5
• 12

Is 2 a factor of 15?

• Yes
• No

Is 5 prime or composite?

• prime, because it has one factor

• prime, because it has two factors

• composite, because it has three factors

• neither

Is 21 prime or composite?

• prime, because is has 2 factors

• composite, because it has 2 factors

• composite, because it has 4 factors

• neither

Which list has ONLY prime numbers?

• 1, 2, 3

• 2, 3, 5

• 2, 3, 4

• 2, 4, 6