v. 25B6; verb
the front porch was added in 1751 : ATTACH, build on, join, append, affix, connect, annex; include, incorporate.
they added all the figures up : TOTAL, count (up), compute, reckon up, tally; Brit. tot up.
the subsidies added up to £1700 : AMOUNT TO, come to, run to, make, total, equal, number.
the recent riots add up to a deepening crisis : AMOUNT TO, constitute; signify, signal, mean, indicate, denote, point to, be evidence of, be symptomatic of; informal spell.
her decision just added to his woe : INCREASE, magnify, amplify, augment, intensify, heighten, deepen; exacerbate, aggravate, compound, reinforce; add fuel to the fire, fan the flames, rub salt on the wound.
she added that she had every confidence in Laura : GO ON TO SAY, state further, continue, carry on.
subtract.
25A0; add up (informal) the situation just didn't add up : MAKE SENSE, stand to reason, hold up, hold water, ring true, be convincing.