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3. Complete the table Unit of measurement We usually use But SI units require

Length Mass

Temperature density

6. Complete the table. Prefix Symbol Factor Scientific

notation example

Giga mega 1,000 centi 10-3 micro microgram n

SI Units Unit Prefixes measurement

unit symbol size Prefix Scientific notation

mass kilogram kg nano (n) billionth 10-9

volume liter L micro (m) millionth 10-6

distance meter m milli (m) thousandth 10-3

amount mole mol centi (c) hundredth 10-2

brightness candela cd kilo (k) thousand 103

current ampere A mega (M) million 106

time Second s giga (G) billion 109

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