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Missing Addend and Subtract

  •  English    21     Public
    Missing numbers in addition and subtraction in all places
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  • ___ - 13 = 7
    20
  •  15
  • ___ - 8 = 11
    19
  •  15
  • 8 + ___ = 22
    14
  •  15
  • 40 - ____ = 20
    20
  •  15
  • 100 - ____ = 10
    90
  •  15