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Add the values in a column or row by using a button. You can use AutoSum to quickly sum a range of numbers in a column or row. Click an empty cell below a column of numbers or to the right of a row of numbers, and then click AutoSum. Excel selects what it determines to be the most likely range of data.
More Excel array formula examples. And here are a few more examples of Excel array formulas that might be helpful. 1  Look up with multiple criteria-a powerful INDEX / MATCH function that can look up by values in 2 different columns. 2  Get all duplicate values in the lookup range-how to get all instances of the lookup value.