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Greatest common factor and least common multiple

Quiz by Andrew Watts

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12 questions
Show answers
  • Q1
    What is the Least Common Multiple (LCM) of 6 and 8?
    12
    24
    18
    48
    30s
  • Q2
    What is the Greatest Common Factor (GCF) of 30 and 45?
    10
    5
    30
    15
    30s
  • Q3
    What is the Least Common Multiple (LCM) of 9 and 12?
    24
    36
    72
    18
    30s
  • Q4
    What is the Greatest Common Factor (GCF) of 16 and 24?
    12
    6
    8
    4
    30s
  • Q5
    What is the Least Common Multiple (LCM) of 15 and 20?
    120
    60
    40
    30
    30s
  • Q6
    What is the Greatest Common Factor (GCF) of 18 and 27?
    9
    6
    3
    12
    30s
  • Q7
    What is the Least Common Multiple (LCM) of 7 and 5?
    12
    35
    25
    20
    30s
  • Q8
    What is the Greatest Common Factor (GCF) of 32 and 48?
    16
    4
    24
    8
    30s
  • Q9
    What is the Greatest Common Factor (GCF) of 20 and 28?
    2
    14
    6
    4
    30s
  • Q10
    What is the Least Common Multiple (LCM) of 21 and 14?
    56
    42
    35
    28
    30s
  • Q11
    What is the Least Common Multiple (LCM) of 4 and 6?
    18
    24
    12
    10
    30s
  • Q12
    What is the Greatest Common Factor (GCF) of 15 and 20?
    10
    15
    4
    5
    30s

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