+ |
Plus Sign |
addition |
10 + 5 = 15 |
− |
Minus Sign |
subtraction |
10 − 9 = 8 |
= |
Equals Sign |
equality |
6 = 5+1 |
≠ |
Not Equal Sign |
inequality |
10 ≠ 9 |
> |
Strict Inequality |
greater than |
55 > 14 |
< |
Strict Inequality |
less than |
44 < 55 |
≥ |
Inequality |
greater than or equal to |
10 ≥ 9 |
≤ |
Inequality |
less than or equal to |
9 ≤ 10 |
( ) |
Parentheses |
calculate expression inside first |
1 × (3+7) = 10 |
[ ] |
Brackets |
calculate expression inside first |
[(1+1)*(1+1)] = 4 |
± |
Plus - Minus |
both plus and minus operations |
3 ± 4 = 7 and -1 |
∓ |
Minus - Plus |
both minus and plus operations |
2 ∓ 3 = -1 and 5
|
* |
Asterisk |
multiplication |
3 * 3 = 9 |
× |
Times Sign |
multiplication |
5 × 5 = 25 |
∙ |
Multiplication Dot |
multiplication |
10 ∙ 10 = 100 |
÷ |
Division Sign |
division |
10 ÷ 5 = 2 |
/ |
Division Slash |
division |
8 / 4 = 2 |
mod |
Modulo |
remainder calculation |
5 mod 2 = 1 |
. |
Period |
decimal point |
2.56 = 2+56/100 |
ab |
Power |
exponent |
33 = 27 |
a^b |
Caret |
exponent |
3 ^ 3 = 27 |
√a |
Square Root |
√a. √a = a |
√9= ±3 |
3√a |
Cube Root |
3√a.
3√a .
3√a =a |
3√8 = 2 |
4√a |
Fourth Root |
4√a.
4√a .
4√a .
4√a =a |
4√16 =±2 |
n√a |
N-th Root (radical) |
|
for n=3, n√8 = 2 |
% |
Percent |
1% = 1/100 |
10% × 30 = 3 |
‰ |
Per-Mille |
1‰ = 1/1000 = 0.1% |
10‰ × 30 = 0.3 |
ppm |
Per-Million |
1ppm = 1/1000000 |
10ppm × 30 = 0.0003 |
ppb |
Per-Billion |
1ppb = 1/1000000000 |
10ppb × 30 = 3×10-7 |
ppt |
Per-Trillion |
1ppt = 10-12 |
10ppt × 30 = 3×10-10 |