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OA.2 Subtraction

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  • 6-3=?
    3
  • 17-8=?
    9
  • 15-4=?
    11
  • 10-10=?
    0
  • 10-5=?
    5
  • 8-7=?
    1
  • 8-3=?
    5
  • 10-1=?
    9
  • 20-2=?
    18
  • 7-3=?
    4
  • 5-4=?
    1
  • 6-6=?
    0
  • 20-6=?
    14
  • 9-4=?
    5
  • 3-3=?
    0
  • 16-3=?
    13
  • 16-8=?
    8
  • 12-2=?
    10
  • 11-5=?
    6
  • 20-1=?
    19
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