Question

Transformati. a)in secunde 5min.,30min.,1pe4min., 3pe2min.,1h b)in minute 1pe2h.,1pe3h.,1pe12h.,2pe5h.,5pe6h.,3pe20h.,c)in ore 3600min.,483840min.,5zile,1saptamina va rog frumos

Answer 1

a
5 min=5×60=300 sec
30 min=30×60=1 800 sec
1/4 min= 60:4=15 sec
3/2min=2×60 :3=40secunde
1h=1×60=60min=60×60=3 600 sec
b
1/2h=60:2=30 min
1/3 h= 60:3=20 min
1/12h= 60:12=5 min
2/5h=60:5×2=24 min
5/6h= 60:6×5=50 min
3/20h= 60:20×3=9min
c
3 600 min=3 600:60 =60 ore
483 840 min= 483 840:60=8 064 ore
5 zile = 5×24=120 ore
1 sapt = 1×7=7 zile = 7×24=168 ore