Add together (3,2)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">add together</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tot up that I've seen before include "Summate" , "Add together (driving offences)" , "Sum - total" , "Add (some numbers)" , "Reckon" .)