5. In A5, type 5, press Enter.
6. Click In A6, the last cell in the column of numbers you want to add. ("A6" has a
heavy dark border and is the "Active Cell." )
7. Click on the Sum, Σ, ("Σ" is the mathematics symbol for sum.) icon on the Formula
Toolbar just left of the Input Line The Function, , icon changes to the Accept, , icon.
8. Click the Accept, , icon (green check mark) or press Enter. The formula,
=SUM(A1:A5), appears in the A6 cell.
9. Press Enter. The sum, 25, will appear in A6. A7 becomes the active cell.
Cell Range
In the section above, the SUM function appears as =SUM(A1:A5). The A1:A5 in the
parenthesis is called a Cell Range. It is shorthand for "from A1 to A5".
Subtraction
The - sign is used for subtraction. To enter the – sign, press the key.
1. Click on A8. To clear cell A8, press the Delete key. (The “Delete Contents”
window appears.) Check the Delete all box and click OK.
2. Type =A6-A7 (Or click the “Function”, , icon. The “=” appears in “A8" The “Function”,
, icon changes to the “Accept”, , icon. Then type "A6-A7".).
3. Press Enter (Or click the “Accept”, , icon.) The answer, 20, appears in A8.
Multiplication
The star ,*, sign is used for multiplication. To enter the * sign, press the Shift key and the
number 8 key.
1. Click on A8. To clear cell A8, press the Delete key. (The “Delete Contents”
window appears.) Check the Delete all box and click OK.
2. Type =A6*A7 (Or click the “Function”, , icon. The “=” appears in “A8”. The
“Function”, , icon changes to the “Accept”, , icon. Then type "A6*A7").
3. Press Enter (Or click the “Accept”, , icon.) The answer, 125, appears in A8.
Division
The slash, /, sign is used for division. To enter the slash, /, sign, press the key [? And /].
1. Click on A8. To clear cell A8, press the Delete key. (The “Delete Contents”
window appears.) Check the Delete all box and click OK.