Odpowiedzi

2009-09-07T19:50:16+02:00
45minut =3/4h
25minut =5/12h
1 s =1/3600h
15 s=1/240h

200 m =1/5km
8 m=1/125km
125cm =1/800km
1500 cm=66 2/3km
2009-09-07T19:57:01+02:00
A)
45 minut - 45/60 = 3/4
25 minut - 25-60 = 5/12
1 sekunda - 1/3600
15 sekund - 15/3600 = 1/240

b)
200 metrów - 200/1000 = 1/5
8 metrów - 8/1000 = 1/125
125 centymetrów = 125/100000 = 1/800
1500 centymetrów - 1500/100000 = 3/200
2009-09-07T20:00:07+02:00
A) 1godz=60min
45min= 45/60=9/12=3/4
25min=25/60=5/12
1min=60s
1godz=60s*60=3600s
1s=1/3600
15s=15/3600=5/1200=1/240
b)1km=1000m
200m=200/1000=1/5
8m=8/1000=2/250=1/125
1m=100cm
1km=100cm*1000=100000cm
125cm=125/100000=1/800
1500cm=1500/100000=3/20