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Missing Addends

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  • 7 + ___ + 8 = 20
    5
  • 2 + __ + 6 = 11
    3
  • 6 + 6 + __ = 18
    6
  • 7 + __ + 7 = 21
    7
  • 3 + 3 + ___ = 9
    3
  • 4 + 5 + ____ = 14
    5
  • 4 + ___ + 4 = 10
    2
  • ___ + 2 + 9 = 16
    5
  • 7 + __ + 6 = 17
    4
  • 9 + ___ + 5 = 17
    3
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