500 dm2 = m2      300 mm2 = cm2      20 000 cm2 = m2
9500mm2 = cm2           7 000 000 m2 = km2
4 000 m2 = dam2      3200 cm2 = dm2      5600 hm2 = km2
3 750 000 m2 = hm2           300 ares = hectares