Select the cell where you want the result
Type =SUM(
Select the cells you want to add
Type )
Press Enter
To add individual numbers, type =A1+B1
To add a range, use =SUM(A1:A10)
To add multiple ranges, use =SUM(A1:A10,C1:C10)
To use AutoSum, click the cell below or beside the numbers
Click AutoSum on the Home tab
Press Enter
