Posted by dustin on Thursday, August 22, 2013 at 4:46pm.
What would 13 less than 30 look like written as a numerical expression

algebra  Henry, Thursday, August 22, 2013 at 6:16pm
13<30.

algebra  Steve, Thursday, August 22, 2013 at 6:32pm
or, 3013
if you are evaluating an expression rather than making a statement (which would be "13 is less than 30") 
algebra  Henry, Thursday, August 22, 2013 at 8:58pm
3013 means 30 decreased by 13 or 30 less(minus) 13.