1. Determine the sum of
   "You need to add up all the items on the receipt";
   - total, tot [Brit, informal], tot up [Brit, informal], sum, sum up, summate [rare], add, add together, tally
    
2. Equal a particular sum or quantity when calculated or combined
   "The bill added up to $2,000";
   - total, number, come, amount, come to
    
3. Be reasonable, logical, or comprehensible
   "His explanation finally added up to me";
   - make sense
    
4. To measure up to in kind or quality
   "His credentials just don't add up to what we're looking for";
   - come, amount

Derived forms: adds up, adding up, added up

Type of: be, become, count, enumerate, exist, number, numerate, turn