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Addition and Subtraction

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  • 7 + _ = 9
    2
  • 3 + _ = 9
    6
  • _ + 7 = 7
    0
  • _ + 4 = 9
    5
  • _ + 1 = 2
    1
  • _ + 3 = 8
    5
  • 6 + _ = 10
    4
  • _ + 3 = 3
    0
  • 3 + _ = 8
    5
  • 5 + _ = 8
    3
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  • _ + 3 = 6
    3
  • 5 + _ = 6
    1
  • _ + 9 = 10
    1
  • _ + 0 = 5
    5
  • 3 + _ = 6
    3
  • _ + 5 = 10
    5
  • 4 + _ = 8
    4
  • 8 + _ = 10
    2
  • 3 + _ = 7
    4
  • 5 + _ = 10
    5
  • 2 + _ = 4
    2
  • 1 + _ = 7
    6
  • 2 + _ = 5
    3
  • 6 + _ = 8
    2
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