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Learning Addition and Subtraction

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  • 1+1-1 =
    1
  • 16+4 =
    20
  • 3 + ___ = 9
    6
  • 11+8 =
    19
  • 10+1 =
    11
  • 4+6-9 =
    1
  • 12+4 =
    16
  • 3+2-2 =
    3
  • 7+8 =
    15
  • 4 + __ = 10
    6
  • 7 - ___ = 2
    5
  • 4+4 =
    8
  • 10+10 =
    20
  • 1+1 =
    2
  • 8+4 =
    12
  • 5+4 =
    9
  • 6-2 =
    4
  • 12+1 =
    13
  • 4+1 =
    5
  • 7+3-5 =
    5
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