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missing addends

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