You donâ€™t have to use the **SUM** function if you want to sum numbers. But when you use more complicated calculations you may find it very useful.

## Summing numbers entered from the keyboard

You can use the **SUM** function when you enter numbers from the keyboard. All numbers that are separated by a comma will be summed.

**Example 1:**

1 |
=SUM(1,2,2.35) |

will return **5.35**.

In the following example, there are numbers that need to be summed up in columns. I will show you a few different ways how you can do this.

## Summing ranges entered from the keyboard

**Example 2:**

Click cell **B6,** then enter the formula and press Enter. Excel will sum up numbers from cell **B2** to cell **B4.**

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=SUM(B2:B4) |

## Summing individual cells by clicking

**Example 3:**

In this method, click cell **C6** and type **=SUM(**. Now, hold down the Ctrl key, click cell **C2**, then **C3** and **C4.**

## Summing cells using the mouse

**Example 4:**

Click cell **D6,** then type **=SUM(**. Drag your mouse from cell **D2** to **D4** and press **Enter.**

## Summing cells using the keyboard

**Example 5:**

Select cell **E6**, then just as before, type **=SUM(** . Press the **up arrow** key twice to move it to cell **E4.** Then, while holding down the **Shift** key, press the up arrow twice again.

Press **Enter** to confirm.