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  1. SUM Definition & Meaning - Merriam-Webster

    The meaning of SUM is an indefinite or specified amount of money. How to use sum in a sentence.

  2. Sum Calculator

    Nov 4, 2025 · Use this calculator to find the sum of a data set. Enter values separated by commas or spaces. Or copy and paste lines of data from spreadsheets or text documents. See all …

  3. SUM | definition in the Cambridge English Dictionary

    SUM meaning: 1. an amount of money: 2. the whole number or amount when two or more numbers or amounts have been…. Learn more.

  4. What is Sum? Definition, Formulas, Examples, Facts - SplashLearn

    The sum can be defined as the result of the addition of two or more numbers. Learn the definition, how to find the sum on the number line, solved examples, and more.

  5. Summation Symbol (∑)

    In math, the summation symbol (∑) is used to denote the summation operation, which is a way of expressing the addition of a sequence of terms.

  6. SUM definition and meaning | Collins English Dictionary

    In mathematics, the sum of two numbers is the number that is obtained when they are added together.

  7. Addition - Wikipedia

    Addition is one of the four basic operations of arithmetic, with the other three being subtraction, multiplication, and division. This operation works by adding two or more terms. [12] An …