R 325.5025 Prefixes.

Rule 25. The following prefixes are used in these rules to mean the numbers indicated: Symbol Prefix Quantity Symbol Prefix Quantity d c m μ n p f a deci centi milli micro nano pico femto atto (=10-1) (=10-2) (=10-3) (=10-6) (=10-9) (=10-12) (=10-15) (=10-18) da h k M G T deka hecto kilo mega giga tera (=10) (=102) (=103) (=106) (=109) (=1012) EXEMPTIONS