Number	Prefix	Symbol
Increasing
101	deka-	da
102	hecto-	h
103	kilo-	k
106	mega-	M
109	giga-	G
1012	tera-	T
1015	peta-	P
1018	exa-	E
1021	zeta-	Z
1024	yotta-	Y
Decreasing
10-1	deci-	d
10-2	centi-	c
10-3	milli-	m
10-6	micro-	u (greek u)
10-9	nano-	n
10-12	pico-	p
10-15	femto-	f
10-18	atto-	a
10-21	zepto-	z
10-24	yocto-	y