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一年級 數學科

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  • 15 - ? = 7
    8
  • ? - 8 = 7
    15
  • ? - 9 = 3
    12
  • ? - 6 = 7
    13
  • ? - 6 = 9
    15
  • 12 - ? = 6
    6
  • 13 - ? = 6
    7
  • ? - 7 = 14
    7
  • 16 - ? = 8
    8
  • 12 - ? = 5
    7
  • ? - 5 = 6
    11
  • 17 - ? = 9
    8
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