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

Answer 1

a) 5 min = 5 × 60 = 360 secunde
   30 min = 30 × 60 = 1800 secunde
   1 /4 min = 1 /4 × 60 = 60/ 4 = 15 secunde
   3 / 2 min = 3/ 2 × 60 = 180 / 60 = 3 secunde
   1 h = 60 min × 60 = 60 × 60 = 360 secunde

b) 1 / 2 h = 1/2 × 60 = 60 / 2 = 30 min
   1/ 3 h = 1/ 3 × 60 = 60/ 3 = 20 min
   1/ 12 h = 1/ 12 × 60 = 60/12 = 10/ 2= 5 min
   2/5 h = 2/ 5 × 60 = 120 / 5 = 24 min
   5/ 6 h = 5/ 6 × 60 = 300 / 60 = 5 min
   3/20 h = 3/20 × 60 = 180 / 20 = 9 min

c) 3600 min = 3600 : 60 = 60 h
   483840 min = 483840 : 60 = 8064 h
   5 zile = 5 × 24 h = 120 h
   1 saptamana = 7 zile = 7 × 24 = 168 h