1) act: to perform in or as if in a play; represent dramatically: act out a story
2) active: to make active; cause to function or act
3) add: to find the sum of ( often fol.by up)
4) analyze: break down or explicate
5) answer:a spoken or written reply, as to a question
6) approximate: almost exact or correct
7) ask: to request; to seek to obtain by words; to petition
8) apply: to make use of as relevant, suitable, or pertinent: to apply a theory to a problem