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Add and subtract within 20

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  • 8 - 6 =
    2
  • 8 + 7 =
    15
  • 12 + 6 =
    18
  • 5 + 5 =
    10
  • 11 + 7 =
    18
  • 2 + 7 =
    9
  • 6 + 8 =
    14
  • 17 - 8 =
    9
  • 15 - 5 =
    10
  • 18 - 5 =
    13
  • 8 - 5 =
    3
  • 13 + 4 =
    17
  • 7 + 7 =
    14
  • 13 - 6 =
    7
  • 16 - 7 =
    9
  • 14 - 8 =
    6
  • 8 + 8 =
    16
  • 6 + 6 =
    12
  • 15 - 6 =
    9
  • 9 - 4 =
    5
  • 10 - 6 =
    4
  • 12 - 7 =
    5
  • 9 + 4 =
    13
  • 9 + 9 =
    18
  • 11 - 7 =
    4
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