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Three digit addition

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  • 648+253
    901
  • 306+209=
    515
  • 123+123=
    246
  • 420+232=
    652
  • 210+120=
    330
  • 442+371=
    813
  • 123+456=
    579
  • 387+334
    721
  • 100+400=
    500
  • 342+271=
    613
  • 405+217
    622
  • 146+271=
    417
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