what are the symbols for each of the diffrent metric prefixes?

Answer 1

A standard set of prefixes in multiples of 10 may be used to derive larger and smaller units. However, the prefixes for multiples of 1000 are the most commonly used.
Multiples and submultiples are related to the fundamental unit by factors of powers of ten, so that one can convert by simply moving the decimal place.
D - decametre
H - hectometre
K - kilometre
M - megahertz
G - gigabyte
T - terabit