What function would you use to calculate the sum of numbers in a range?

The SUM() function is specifically designed in Excel to calculate the total of a range of numbers. When you use SUM() and provide a range of cells as arguments, it adds together all the numeric values within that range. For example, if you input SUM(A1:A10), Excel will return the sum of the values from cells A1 through A10. This function is fundamental in Excel for performing addition operations and is widely used for financial analysis, budgeting, and data aggregation tasks.

The other choices do not represent any valid functions in Excel. ADD() is not a recognized function; the correct method to add numbers is through the SUM() function. TOTAL() and SUMMARIZE() also do not exist as functions in Excel for summing numbers. Therefore, SUM() is the only appropriate option for calculating the sum of numbers in a specified range.