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SUMAS Y RESTAS

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  • 4+4
    8
  • 5-3
    2
  • 10-5
    5
  • 6+1
    7
  • 5+10
    15
  • 7+3
    10
  • 20+2
    22
  • 10-1
    9
  • 8-4
    4
  • 20-20
    0
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