Prefixes

Examples of prefixes would be..
Tera-10^12  T
Giga-10^9   G
Mega-10^6  M
Kilo-10^3   k
Deci-10^-1 d
Cent-10^-2 c
Milli10^-3 m
Micro10^-6 u
Nano10^-9 n
Pico10^-12 p

All calculation if included prefixes are to be in index notation

E.g  1.2 x 10^3   3 x 10^-3