Math Symbols

Written by Jerry Ratzlaff on . Posted in Nomenclature & Symbols for Engineering, Mathematics, and Science

This is a list of the most common math symbols:

SymbolDefinitionExample
\(+\) addition \(5+4=9\)
\(-\) subtraction \(5-4=1\)
\(\mp\) plus - minus, both plus and minus operations \(5\mp4=9\) and \(1\)
\(\pm\) minus - plus, both minus and plus operations \(5\mp4=1\) and \(9\)
\(*\) multiplication \(5*4=20\)
\(\times\) multiplication \(5\times4=20\)
\(\cdot\) multiplication \(5\cdot4=20\)
\(\div\) division \(5\div 4=1.25\)
\(/\) division \(5/4=1.25\)
\(-\) horizontal line is for division / fraction \(\frac {5} {4} =1.25\)
\(.\) decimal point \(5.4\)
\(=\) equal \(5+4=9\)
\(\left(\; \right)\) parentheses, calculate expression inside first \( 5\times \left(5+4\right) = 45\)
\(\left[\; \right]\) brackets, calculate expression inside first \( \left[ \left(5+4\right) \times \left(9+4\right) \right] = 117\)
\(a^n\) power, an exponent \(5^4 = 3125\)
\( \sqrt a\) Square root - \(\sqrt a \;\times\; \sqrt a = a\) \(\sqrt 9= 3\)
 % percent, \(1\)% \(= 1/100 \) \(5\)% \(\times 4 = 0.2 \)