noun (n)

• problem solving that involves numbers or quantities(noun.cognition)

  Synonym:
  calculation, computation, figuring
  

  source: wordnet30
• a bill for an amount due(noun.communication)

  Synonym:
  tally
  

  source: wordnet30
• the act of counting; reciting numbers in ascending order(noun.act)

  Synonym:
  count, counting, enumeration, numeration, tally
  

  source: wordnet30
• The act of one who reckons, counts, or computes; the result of reckoning or counting; calculation.(noun)

  source: webster1913