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Greatest Common Factor

Quiz by Carolyn Kay

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20 questions
Show answers
  • Q1
    The factors of 18 and 27 are 1, 2, 3, 6, 9, 18 and 1, 3, 9, 27. This means the greatest common factor of 18 and 27 is...
    54
    1
    3
    9
    45s
  • Q2
    If two numbers are consecutive, then their GCF will be 1 (so for example the GCF of 6 and 7 is 1).
    true
    false
    True or False
    45s
  • Q3
    What is the greatest common factor (GCF) of 10 and 15?
    5
    1
    2
    30
    45s
  • Q4
    What is the GCF of 3 and 4?
    12
    3
    1
    4
    45s
  • Q5
    What is the GCF of 4 and 5?
    5
    4
    20
    1
    45s

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