there is no "xon the keyboard linuxaltgr shift use "*instead * still no surprises the arithmetical operations addition and subtraction have their usual mathematical symbols reflected on the standard keyboard we have plus sign and minus sign (actually "hyphen"character and we use them there is no multiplication symbol on the standard keyboard you can generate it as one of the octopus-friendly key combinationsbut it' not simple key insteadthe computing profession has settled on using the asterisk ("*"to represent multiplication on your keyboards this is [shift]+[ multiplying two integers gives third integer