Symboles communs d’opérations

SYMBOL	EXAMPLE	MEANING IN FULL
+	u+v	u plus v
-	v-u	v minus u
.	3.141	three point one four one
=	1 tonne=1000kg	one tonne equal to one thousand kilogrammes
$\ne$	x $\ne$ y	x does not equal y
$\times$	mass $\times$ velocity	mass multiplied by velocity
$\div$	8 $\div$ 2	eight divided by two
/	20 km/h	twenty kilometers per hour
$\equiv$	1mm vertical $\equiv$ 5N	one millimetre vertical is equivalent to five newtons
$\simeq$	60km/h $\simeq$ 17m/s	sixty kilometres per hour is approximately equal to seventeen meters per second
$\propto$	stress $\propto$ strain	stress is proportional to strain
:	2:1	two to one
%	0.4%	zero point four per cent
$\sqrt$	$\sqrt{5}$	the square root of five
$^3$	$3^3$	three cubed
$^4$	$10^4$	ten to the power four
>	>18mm	greater than eigthteen millimetres
<	<25mm	less than twenty five millimetres
$\ge$	$\ge$ 30mm	greater than or equal to thirty millimetres
$\pm$	$\pm$ 5kg	plus or minus five kilogrammes
°	50°	fifty degrees