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Coroana.1.Aflati 1pe2 din:
24km, 320m, 16t, 284l, 212g, 400q.

2.Calculati:
3/5din 250, 4/7din490.


Răspuns :

1/2din24km=12km
1/2din320m=160m
1/2din16t=8t
1/2din284l=142l
1/2din212g=106g
1/2din400q=200q

2)3/5din250=750/5=150
   4/7din490=1960/7=280