Prime and Composite Numbers

Prime or Composite

7

• Prime

  Exactly 2 factors - 1 & itself

• Composite

  3 or more facotrs

Prime or Composite

11

• Prime

  Exactly 2 factors - 1 & itself

• Composite

  3 or more facotrs

Prime or Composite

5

• Prime

  Exactly 2 factors - 1 & itself

• Composite

  3 or more facotrs

Is 11 Prime or Composite?

• Prime

• Composite

The number 11 is​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 2 factors

• more than 2 factors

All of these are prime except

• 3

• 9

• 2

• 13

Match the following

• Only has 2 factors

  1 and itself

• Is not prime or composite

• 2

• Prime Numbers

• 1

• Composite Numbers

• Have more than 2 factors

• The smallest prime number

The number 17 is ​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 1 factor pair

• more than 1 factor pair

Which number below is NOT prime?

• 3

• 7

• 9

• 11

The number 21 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 1 factor pair

• exactly 1 factor pair