Choose the correct word to complete each sentence. compute, computing, computation,

Choose the correct word to complete each sentence. compute, computing, computation, computerize, computerization a) The _______ of the manufacturing division will be expensive in the-short term, but cost-effective in the long term. b) We should be able to _______ our profit for next year fairly accurately with the new program. c) I could tell from all the _______ on the board that a maths lesson was in progress.