Răspuns:
621 < 651
rotunjire la zeci :
621 = 620
651 = 650
rotunjire la sute :
621 = 600
651 = 700
826 > 819
rotunjire la zeci :
826 = 830
819 = 820
rotunjire la sute :
826 = 800
819 = 800
185 < 194
rotunjire la zeci :
185 = 190
194 = 190
rotunjire la sute :
185 = 200
194 = 200
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