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Prime and Composite Numbers

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  • Leo needs a new jersey number. He wants to choose a prime number less than 10. What are 2 options?
    2, 3, 5, 7
  • Is this number prime or composite? 35
    Composite
  • The test average in Ms. Bennett's class was 92. Was their average prime or composite?
    Composite
  • Is this number prime or composite? 23
    Prime
  • What is a prime number?
    A number that has only two factors
  • Is this number prime or composite? 17
    Prime
  • 9 is prime or composite?
    composite
  • Is 1 prime or composite?
    niether
  • Is this number prime or composite? 81
    Composite
  • Is this number prime or composite? 2
    Prime
  • What is a composite number?
    A number that has 3 or more factors
  • Is this number prime or composite? 57
    Composite
  • Is this number prime or composite? 32
    Composite
  • 18 is prime or composite?
    composite
  • Is this number prime or composite? 24
    Composite
  • Is this number prime or composite? 76
    Composite
  • 23 is prime or composite?
    prime
  • What is the only even prime number?
    2
  • Is this number prime or composite? 47
    Prime
  • Is this number prime or composite? 43
    Prime
  • Is this number prime or composite? 19
    Prime
  • All even numbers are divisible by what number?
    2
  • Challenge: Prime or Composite? 123
    Composite. 3's rule
  • Why is 2 prime even though it is an even number?
    There are only 2 factors for 2, 1 x 2
  • Is this number prime or composite? 67
    Prime
  • 13 is prime or composite?
    prime
  • Is this number prime or composite? 49
    Composite
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