Les unités de longueur les plus courantes ?

• 1 km = 10³ m = 1000 m
• 1 hm = 10² m = 100 m
• 1 dam = 10¹ m = 10 m
• 1 m = 0,001 km = 1000 mm
• 1 dm = 10^-1 m = 0,1 m
• 1 cm = 10^-2 m = 0,01 m
• 1 mm = 10^-3 m = 0,001 m
• 1 µm = 10^-6 m = 0,000.001 m
• 1 nm = 10^-9 m = 0,000.000.001 m