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Missing Addends and Subtrahends to 20

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  • 9 + ___ = 17
    8
  • 12 + ___ = 19
    7
  • 16 - ___ = 9
    7
  • 5 + ___ = 12
    7
  • 15 + ___ = 20
    5
  • 6 + ___ = 11
    5
  • 15 - ___ = 12
    3
  • Even or odd?
    even
  • ___ + 19 = 20
    1
  • 17 + ___ = 19
    2
  • 6 + ___ = 15
    9
  • Even or odd?
    even
  • Even or odd?
    odd
  • 19 - ___ = 7
    12
  • Even or odd?
    Even
  • 16 - ___ = 5
    11
  • 9 + ___ = 11
    2
  • Even or odd?
    even
  • ___ + 7 = 9
    2
  • 13 - ___ = 4
    9
  • 6 + ___ = 20
    14
  • 12 - ___ = 1
    11
  • Even or odd?
    odd
  • 20 - ___ = 9
    11
  • 13 + ___ = 16
    3
  • 20 - ___ = 5
    15
  • 11 - ___ = 5
    6
  • ___ + 7 = 13
    6
  • Even or odd?
    odd
  • 14 - ___ = 11
    3
  • Even or odd?
    odd
  • Even or odd?
    odd
  • Even or odd?
    even
  • Even or odd?
    even
  • 16 - ___ = 4
    12
  • 17 - ___ = 6
    9
  • ___ + 11 = 16
    5
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