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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 formulas in Excel - Step by Step Tutorial

    Use the SUM function in Excel to sum a range of cells, an entire column or non-contiguous cells. To create awesome SUM formulas, combine the SUM function with other Excel functions.

  4. Summation - Wikipedia

    Summation of a sequence of only one summand results in the summand itself. Summation of an empty sequence (a sequence with no elements), by convention, results in 0. Very often, the …

  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 function - Microsoft Support

    How to use the SUM function in Excel to add individual values, cell references, ranges, or a mix of all three.

  7. 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.

  8. SUM | English meaning - Cambridge Dictionary

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

  9. Summation Formulas - GeeksforGeeks

    Jul 23, 2025 · In mathematics, the summation is the basic addition of a sequence of numbers, called addends or summands; the result is their sum or total. The summation of an explicit …

  10. Use the SUM function to sum numbers in a range - Microsoft …

    You can use a simple formula to sum numbers in a range (a group of cells), but the SUM function is easier to use when you’re working with more than a few numbers.