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Rotunjiti la ordinul zecilor apoi la ordinul sutelor nr 682;779;405;681;553;234;581

Răspuns :

682:680,700 779:780,800 405:410,400 681:680,700 553:550,600 234:230,200 581:580,600
680,780,410,680,550,230,580 la zeci .700,800,400,700,600,200,600 La sute ...