# SUM: add numbers in Excel

Use SUM to add a list of values or a continuous range without writing a long chain of plus signs.

## Syntax

`=SUM(number1, [number2], …)`

## A simple example

`=SUM(B2:B4)`

If B2, B3, and B4 contain 12, 8, and 15, the result is 35. The colon includes every cell between the start and end of the range.

## What to watch for

A comma separates arguments; a colon describes a range. =SUM(B2,B4) skips B3. Numbers stored as text in a referenced range may be ignored.

## Build confidence with practice

Try the guided exercise in Sheetstep, then change a number in the practice workbook and observe the result. Use the skills quiz to check what you remember.