Yes, if they are compensating errors. For example you might be trying to work out 50 plus 20 on your calculator, but by mistake you enter 90 instead of 50 for the first number. This would mean your...
Two slang expressions are to screw up or to mess up. A more polite expression is "to be in error" or to "do something wrong." An older expression is to "make a faux pas," which comes from the French...