W: (n) sum [Related to: sum, summate] (the final aggregate) "the sum of all our troubles did not equal the misery they suffered"
W: (n) sum [Related to: sum, summate] (a quantity obtained by the addition of a group of numbers)
W: (n) summation [Related to: sum] (the arithmetic operation of summing; calculating the sum of two or more numbers) "the summation of four and three gives seven"; "four plus three equals seven"
W: (n) addition [Related to: add] (the arithmetic operation of summing; calculating the sum of two or more numbers) "the summation of four and three gives seven"; "four plus three equals seven"
W: (n) adder [Related to: add] (a machine that adds numbers)
W: (n) tally [Related to: tally] (the act of counting; reciting numbers in ascending order) "the counting continued for several hours"