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Subtraction within 100

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  • 29-9
    20
  • 88-4
    84
  • 78-5
    73
  • 20-19
    1
  • 32-14
    18
  • 15-5
    10
  • 20-17
    3
  • 30-8
    22
  • 47-8
    39
  • 11-9
    2
  • 83-9
    74
  • 30-27
    3
  • 25-16
    9
  • 77-4
    73
  • 63-7
    56
  • 19-11
    8
  • 44-11
    33
  • 45-15
    30
  • 30-9
    21
  • 23-9
    14
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