1. A brief statement that presents the main points in a concise form
   "he gave a sum-up of the conclusions";
   - summary, wrap-up

1. Give a summary (of)
   "he summed up his results";
   - summarize, summarise [Brit], run over
    
2. Be a summary of
   "The abstract sums up the main ideas in the paper";
   - summarize, summarise [Brit], sum
    
3. Determine the sum of
   "You need to sum up all the items on the receipt";
   - total, tot [Brit, informal], tot up [Brit, informal], sum, summate [rare], add, add together, tally, add up

Derived forms: sums up, summing up, summed up, sum-ups

Type of: count, enumerate, ingeminate [archaic], iterate, number, numerate, reiterate, repeat, restate, retell, say, state, statement, tell