PREFIXES FOR SI UNITS:

PREFIXES FOR SI UNITS:

             Prefixes are a word/ words, used internationally to be multiplied with the basic units.

Prefixes are used with those quantities, which are either very large or very small compared with the basic standard unit. e.g thickness of a piece of paper is measured in millimeters, and not in centimeters. The long distance between two cities is given in kilometers.

             These prefixes are given special names and symbols and are certain power of 10 to multiply a quantity.

Prefixes representing power of 10

Prefix	Symbol	Multiple	Prefix	Symbol	Multiple
Yotta	Y	1024	deci	d	10-1
Zeta	Z	1021	centi	c	10-2
Exa	E	1018	milli	m	10-3
Peta	P	1015	Micro	µ	10-6
Tera	T	1012	Nano	n	10-9
Giga	G	109	Pico	?	10-12
Mega	M	106	Femto	f	10-15
Kilo	K	103	Atto	a	10-18
Hector	h	102	Zepto	z	10-21
Deca	da	101	Yocto	y	10-24