How to Create a Sum Using the Function Button

How to Sum Columns or Rows in Google Sheets

You can also use a menu to enter a function instead of typing it. Here’s how to do it.

Enter the data, then select the cell in which you want the sum to appear.
Click or tap the Function button.
On the desktop version of Google Sheets, Function is on the right side of the formatting bar and looks like the Greek letter sigma (∑)
In the list of function categories, tap Math.
The Function menu on the desktop version of Google Sheets contains a few commonly used formulas. SUM may be on that list.
The functions appear alphabetically. Scroll down, then tap SUM.
In the spreadsheet, enter the range of numbers you want to add together.

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