a) 1 cm = 10 mm
1 dm = 10 cm
1 m = 10 dm
1 dam = 10 m
1 hm = 10 dam
1 km = 10 hm
b) 1 m = 100 cm
1 dm= 100 mm
1 dam = 100 dm
1 hm = 100 m
1 km = 100 dam
c) 1 m = 1000 mm
1 dam = 1000 cm
1 hm = 1000 dm
1 km = 1000 m
d) 1 mm = 0,001 m
1 cm = 0,001 dam
1 dm = 0,001 hm
1 m = 0,001 km