add together (
http://definr.com/add together)
v 1: determine the sum of; "Add all the people in this town to
those of the neighboring town" [syn:
total,
tot, {tot
up},
sum,
sum up,
summate,
tote up,
add,
tally,
add up]
2: make an addition by combining numbers; "Add 27 and 49,
please!" [syn:
add] [ant:
subtract]