A small scale shows units of centimetres and millimetres on one
side and inches on the other side. One centimetre has 10 divisions
called millimetres. These are denoted by cm and mm.
1 centimetre(cm) = 10 millimetres(mm)
1 metre(m) = 100 centimetres(cm)
1 kilometre(km) = 1000 metres(m)