Mathematical Symbols

Symbols save time and space when writing. Here are the most common mathematical symbols:

Symbol	Meaning	Example
+	add	3+7 = 10
−	subtract	5−2 = 3
×	multiply	4×3 = 12
÷	divide	20÷5 = 4
/	divide	20/5 = 4
( )	grouping symbols	2(a−3)
[ ]	grouping symbols	2[ a−3(b+c) ]
{ }	set symbols	{1,2,3}
π	pi	A = πr2
∞	infinity	∞ is endless
=	equals	1+1 = 2
	approximately equal to	π 3.14
≠	not equal to	π ≠ 2
< ≤	less than, less than or equal to	2 < 3
> ≥	greater than, greater than or equal to	5 > 1
	square root ("radical")	√4 = 2
°	degrees	20°
	therefore	a=b  b=a