commonly used units:
weight: gram (g) and kilogram (kg) length: millimetre (mm), centimetre (cm), metre(m) and kilometre (km) capacity: litre (l)
weight: gram (g) and kilogram (kg)
length: millimetre (mm), centimetre (cm), metre(m) and kilometre (km)
capacity: litre (l)
mass, capacity, gram, tonne, litre