Mathematics symbols - Basic

 Mathematics Symbols are very important to learn mathematics, on using symbols we can easily understand. 

 Mathematics Symbols can be categorized on their importance in the following ways:

1. Mathematics symbols - Number
2. Mathematics symbols - Basic
3. Mathematics symbols - Algebraic
4. Mathematics symbols - Geometric
5. Mathematics symbols - Trigonometry
6. Mathematics symbols - Set Theory
7. Mathematics symbols - Statistics & Probability
8. Mathematics symbols - Calculus And Analysis
9. Mathematics symbols - Logical
10. Mathematics symbols - Roman
11. Mathematics symbols - Greek
12. Mathematics symbols - Miscellaneous

Now we shall learn /discuss second topic Mathematics symbols - Basic on this post

 These are very important Basic Tools frequently used by us

Symbol	Name of Symbol	Definition / Meaning	Illustration
=	Sign of Equality / Equal sign	equality	1+3 =4  1+3  is equal to 4
≠	Not equal sign	inequality	-4 ≠ 4 -4 is not equal to 4
≈	Approximately equal	approximation	sin(0.0001) ≈ 0.0001, a ≈ b means                 a is approximately equals to b
>	Strict inequality	greater than	9 > 4 9 is greater than 4
<	Strict inequality	less than	-3 < -2 -3 is less than -2
≥	Inequality	greater than or equals to	15 ≥ 14, a ≥ b means a is greater than or equals to b
≤	Inequality	less than or equals to	-1 ≤ 5, a≤ b means a is less than or equals to b
( )	Parentheses	calculate expression inside first	-2 × (3+5) = -16
[ ]	Brackets	calculate expression inside first	[(1+3)×(1+5)] = 24
+	Plus sign	addition	0 + 1 = 1 or 1 +1 = 2 etc
−	Minus sign	subtraction	5-2 = 3 or -2 − 1 = -3 etc
±	Plus - Minus	both plus and minus operations	4 ± 5 = 9 or -1
∓	Minus - Plus	both minus and plus operations	4 ∓ 5 = -1 or 9
*	Asterisk	multiplication	2 * 4 = 8 or 1*1 = 1 etc
×	Times sign	multiplication	2 × 4 = 8 or -2 x -3 = 6 etc
⋅	Dot sign	multiplication	2 ⋅ 4 = 8 or -2 .3 = -6 etc
÷	Sign of Division	division	10÷ 2 = 5 Division by 0 is not possible
/	Slash sign  for Division	division	10 / 2 = 5
	-  Horizontal line	Horizontal line -	generally used for fractions
mod	Modulo	remainder calculation	3 mod 2 = 1
.	Period /Point sign	decimal point, decimal separator	3.56 = 3+56/100
ab	Power / Index	exponent	43 = 4x4x4= 64
a^b	Caret	exponent	(-3) ^ 3 = (-3) x (-3) x (-3) = -27 etc
√a	Square root of positive number	√p ⋅ √p = p,                  where p is any number	√25 = ±5  √100 = ±10 √625 = ±25 etc
3√a	Cube root	3√p ⋅ 3√p  ⋅ 3√p =p,   where p is any number	3√1 = 1 3√27 = 3 3√125 = 5 3√1000 = 10 etc
4√a	Fourth root	4√p ⋅ 4√p ⋅ 4√p  ⋅ 4√p  = p where p is any number	4√1 = ±1 4√16 = ±4 4√81 = ±3 4√10000 = ±10 etc
n√a	The n-th root of any number	Radical	for n=5, n√32 = 2
%	Percent	1% = 1/100	10% × 50 = 5
‰	Per-mile	1‰ = 1/1000 = 0.1%	10‰ × 50 = 0.5
ppm	Part per million	1ppm = 1/1000000	10ppm × 50 = 0.0005
ppb	Part per-billion	1ppb = 1/1000000000	10ppb × 50 = 5×10-7
ppt	Part per-trillion	1ppt = 10-12	10ppt × 50 = 5×10-10