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Subtracting with regrouping

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  • 726-419=
    307
  • 622-394=
    228
  • 840-525=
    315
  • 481-323=
    158
  • 353-136=
    217
  • 951-652=
    299
  • 519-450=
    69
  • 451-218=
    233
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