primes, hcf and lcm

Is 17 a prime or composite number? 

• prime
• composite

I am a prime number between 30 and 40.  Which number could I be?

• 31
• 33
• 36
• 39

What is the only even number that is prime?

• 1
• 2
• 4
• 10

Which statement is true? 

•  A prime number has to be greater than 1. 
• The number 1 is neither prime nor composite. 
• 0 and 1 are neither prime nor composite. 
• All of the above are true

A prime number has  how many factors? 

• More than 2
• Can be any amount depending on the number
• Exactly 2
• Only 1

Write 36 as the product of it's prime factors...

• 2 x 2 x 3 x 3

• 2 x 2 x 2 x 3

• 2² x 3²

• 2² x 3

Write 80 as the product of it's prime factors...

Write your answer in index form...

• 2⁴ x 5

• 2 x 2 x 2 x 5 x 5

• 2 x 2 x 2 x 2 x 5

• 2³ x 5²

Find the HCF of 12 and 16...

• 2

• 4

• 6

• 8

Find the LCM of 12 and 16...

• 48

• 36

• 64

• 96

Find the HCF of 12 and 15 ?

• 2
• 2 x 3
• 3
• 60