Răspuns:
a)
5 m = 5000 mm ( 1 m = 1000 mm)
7 km = 7000 m ( 1 km = 1000 m)
3000 mm = 3 m ( 1000 mm = 1 m)
b)
27,000 mm = 270 cm ( 10 mm = 1 cm)
490 cm = 4.9 m ( 100 cm = 1 m)
5 hm = 5000 m ( 1 hm = 100 m)
c)
20,000 m = 20 km ( 1000 m = 1 km)
4000 cm = 40 m ( 100 cm = 1 m)
700 dam = 7 km ( 100 m = 1 dam)