Summations are mathematical calculations that involve adding numbers together. There are several synonyms for summations that may be used in different contexts. Some of the synonyms for summations include totals, additions, calculations, computations, and reckonings. These terms all refer to the process of adding numbers together to arrive at a final result. Other terms that can be used to describe a summation include aggregations, sum-ups, and tallies. Each of these terms can be used to help communicate the same concept in slightly different ways and may be preferred depending on the context in which they are used.