Study

unknown number

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  • 9 + 7 = ______
    16
  • ______ + 7 = 18
    11
  • 18 - 7 = ______
    11
  • 13 - 8 = ______
    5
  • 11 - 3 = _____
    8
  • 8 - _____ = 4
    4
  • 3 + _____ = 11
    8
  • 24 - ______ = 18
    6
  • 16 - _____ = 8
    8
  • 9 + _____ = 12
    3
  • 6 + 7 = _____
    13
  • 16 - _____ = 7
    9
  • 12 - ______ = 6
    6
  • 18 - ______ = 6
    12
  • 5 + _____ = 13
    8
  • 15 - _____ = 6
    9
  • 12 + _____ = 18
    6
  • 7 + ______ = 9
    2
  • 8 + _____ = 11
    3
  • 24 - _____ = 19
    5
  • 3 + ____ = 8
    5
  • 6 + 18 = ______
    24
  • 19 + ______ = 24
    5
  • 9 + 6 = _____
    15
  • 9 + _____ = 16
    7