用竖式计算并进行验算995-775=487-35=985-807=391+589=136+471=252+6=345+427=696+266=437+270=856-213=683+181=999-921=903-786=220-31=81+519=397+455=525-412=256+728=736-675=726-501=461+433=168+750=833-732=694-149=961-600=651-615=718-608=332+384=188-14=361+331=166+262=515+483=419+489=156-25=811-796=878-128=230-177=423+493=275+421=867-387=395-46=711-17=334+491=313+478=376+373=305+63=824-224=432+316=469+293=202+764=209-96=179+686=145-117=391+416=910-284=557-401=435+481803-408=707+220=568-309=59+583=494+264=971-508=407+320=771-419=443+286=893-818=654+184=829-10=182+465=715-594=38+241=277+566=630-341=929-611=214+739=299+437=476-68=459+339=957-679=531+975=987-799=457+368=258-168=342-274=258+553=445+369=468-389=597+324=385+247=978-199=467+333=492+85=74+273=935-690=380+475=540+448=683-604=476+451=138+81=469+412=2