S.I.
• S.I. is short for International System of Units,
the modern form of the metric measurement system
and the most widely used system in the world.
• the S.I. base units are mass  the kilogram,
time  the second, length  the metre.
• all other units are derived from these.
EXAMPLES:
Metric Units ~ Length
10 millimetres = 1 centimetre, cm
10 centimetres = 1 decimetre, dm
10 decimetres = 1 metre, m
10 metres = 1 decametre, Dm or dkm
10 decametres = 1 hectometre, hm
10 hectometres = 1 kilometre, km
1000 metres = 1 kilometre, km
Metric Units ~ Area
1 square metre = 10 000 square centimetres, cm^{2}
1 hectare = 10 000 square metres, m^{2}
1 square kilometre = 100 hectares, ha
Metric Units ~ Mass
1000 milligrams = 1 gram, g
1000 grams = 1 kilogram, kg
1000 kilograms = 1 tonne, t
Metric Units ~ Volume
1000 cubic millimetres = 1 cubic centimetre, cm^{3}
1000 cubic centimetres = 1 cubic decimetre, dm^{3}
1,000 cubic decimetres = 1 cubic metre, m^{3}
1,000,000 cubic centimetres = 1 cubic metre, m^{3}
Metric Units ~ Capacity
(fluid volume)
10 millilitres = 1 centilitre, cl or cL
10 centilitres = 1 decilitre, dl or dL
10 decilitres = 1 litre, l or L
1000 litres = 1 kilolitre, kl or kL
1,000,000 litres = 1 megalitre, Ml or ML
1,000,000,000 litres = 1 gigalitre, Gl or GL
1,000,000,000,000 litres = cubic kilometre = 1 teralitre, Tl or TL
Metric Units ~ Temperature
Celsius, ºC also known as Centigrade, ºC
