Which of these is not a factor of 60?
  • 10
  • 15
  • 20
  • 25
Which of these is a factor of 70?
  • 9
  • 10
  • 11
  • 12
Is 4 a factor of 21?
  • Yes
  • No
  • Seldom
  • Often
Which of these is a factor of 66?
  • 3
  • 4
  • 8
  • 12
A number which divides exactly into two other numbers is what sort of factor of those numbers?
  • Cheap
  • Expensive
  • Common
  • Frequent
Which of these is not a factor of 80?
  • 2
  • 3
  • 4
  • 5
Which of these sets of numbers are not all factors of 100?
  • 2, 4, 10
  • 5, 10, 20
  • 2, 20, 50
  • 20, 40, 50
Which of these sets of numbers are all factors of 80?
  • 2, 4, 8, 16
  • 2, 4, 8, 12
  • 4, 8, 16, 18
  • 2, 4, 14, 20
Which of these is a factor of 33?
  • 7
  • 9
  • 11
  • 13
Which of the following is a factor pair of 32?
  • 2 and 14
  • 2 and 16
  • 2 and 18
  • 2 and 20
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