a)67 m = 670 dm =0,067 km= 6,7 dam;
b)39 cm = 390 mm =3,9 dm = 0,39 m = 0,0039 hm =0,00039 km;
c)85 dm = 850 cm = 8500 mm = 8,5 m = 0,85 dam = 0,085hm = 0,0085 km;
d)24 mm = 2,4cm = 0,24 dm = 0,024 m = 0,0024 dam = 0,00024 hm = 0,000024km;
e)14 dam = 140 m = 1400 dm =14000 cm = 140000 mm = 1,4 hm = 0,14 km;
f)48 hm =4800m = 48000 dm = 480000 cm = 4800000 mm = 480 dam = 4,8 km.