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Calculeaza: 7 h-3h=?m 3 zile-2 zile=?h 480s-2 min=?min

Răspuns :

1) 7h-3h=4h
4h*60=240 minute

2) 3zile-2zile=1zi=24h

3)2*60=120 secunde
480-120=360 secunde
360/60=6 minute
7 h- 3 h=240 min
3 zile- 2 zile=24 ore
480:60=8
8-2=6 sec.....