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Factors, Multiples, Prime, Composite Numbers

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  • Sarah and Luke are planning to hang posters. How many different ways could they hang 9 posters?
    1x9 and 3x3
  • Is the number 1 prime or composite?
    Neither
  • How do you know if a number if prime?
    Only 1 multiplication fact will work
  • Is 2 prime or composite?
    Prime
  • What are all the factors of 15?
    1, 3, 5, 15
  • How many factor pairs are there for the number 12?
    3
  • List all the factors for 24
    1, 2, 3, 4, 6, 8, 12, 24
  • List the first 5 multiples of 3
    3, 6, 9, 12, 15
  • Is the number 11 prime or composite?
    Prime
  • Is 2x8 the only factor pair for 16?
    No-4x4 also
  • 2 is the only even prime number. True or False
    True
  • Is 25 a multiple of 5?
    Yes