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  • 39+45=?
    84
  • 98+89=?
    187
  • 20+49=?
    69
  • 99+99=?
    198
  • 12+21+12+21=?
    66
  • 15+16=?
    31
  • 70+7=?
    77
  • 498+301=?
    799
  • 1982+...=2000
    18
  • 25+453
    478
  • 456+654=?
    1110
  • 250+52
    302
  • 90=78+...
    12
  • 200+50=?
    250
  • 345+543=?
    888
  • 123+12=?
    135
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