Study

Factors & Multiples

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  • Is 12 a prime or composite number?
    composite
  • Sarah had 18 football cards. Can she group them in more than 2 ways?
    Yes
  • Is 17 prime or composite?
    prime
  • Select the prime number: 15, 19, 27
    19
  • Roger has 23 baseball cards. Can he group them in more than 2 ways?
    no
  • What factors of 30 are also prime numbers?
    2, 3, 5
  • Is 5 a MULTIPLE of 15?
    No. 5 is a factor of 15.
  • List all the factor pairs for 12.
    (1,12) (2,6) (3,4)
  • List all of the factors of 9.
    1, 3, 9
  • Name 3 multiples of 10.
    Ex: 10, 20, 30, etc.
  • Name a multiple of 5 that has a factor of 2.
    Ex: 10, 20, 30, etc.
  • Select the composite number: 5, 7, 9, 11
    9
  • Which is not a multiple of 3? (3, 6, 9, or 13)
    13
  • Sally says that all of the factors of 20 are 1,2,4,5, and 10. Is she correct? Why or why not?
    No, she is not correct. She forgot that 20 is also a factor of 20.
  • Is 30 a multiple of 6?
    yes
  • Which is a factor pair for 28? (3 and 9), (4 and 7), or (6 and 5)
    4 and 7
  • Is 22 prime or composite?
    composite
  • Which is not a factor pair for 24? (1 and 24), (3 and 6), (4 and 6)
    (3 and 6)
  • Is 2 a prime or composite number?
    prime
  • Lauren made a factor tree for 16. Would the number 4 be on the tree?
    Yes