From Longman Dictionary of Contemporary Englishadd up to something phrasal verbto produce a particular total or result Rising prison population and overcrowding add up to a real crisis. → add→ See Verb table
Examples from the Corpus
add up to • These added up to a system you could understand and adjust to, whether or not you approved of it.• The clutter doesn't add up to much.• Just 200 extra calories each day add up to one-half pound of extra body fat each week.• Factor in other magazines, fall catalogs choking the mailbox and spreads in local newspapers and it adds up to stylish overstimulation. 