In Google Sheets, you can add numbers using the **+** sign.

**To add numbers in Google Sheets, follow these steps:**

- Enter the numbers that you want to add into cells.
- In the cell where you want to display the sum, enter the
**+**sign. - Enter the range of cells that you want to add.

For example, to add the numbers in cells A1 and A2, you would enter the following formula into cell A3:

```
=A1+A2
```

This formula would return the sum of the values in cells A1 and A2.

You can also use the **AutoSum** button to quickly add a range of numbers. To do this, select the range of numbers that you want to add, and then click the **AutoSum** button in the toolbar.

**Here are some additional tips for adding numbers in Google Sheets:**

- You can use the
**Ctrl**+**Shift**+**+**keyboard shortcut to enter the**+**sign. - You can use the
**F2**key to edit a formula. - You can use the
**Ctrl**+**Enter**keyboard shortcut to enter a formula into multiple cells.

**Adding numbers with mixed data**

If you are adding a range of cells that contains both numbers and text, you can use the **SUMPRODUCT** function. The **SUMPRODUCT** function has the following syntax:

```
=SUMPRODUCT(array1, array2)
```

Where:

**array1**is the first array that you want to sum.**array2**is the second array that you want to sum.

For example, to add the values in cells A1 to A10, where cells A1 to A5 contain numbers and cells A6 to A10 contain text, you would enter the following formula:

```
=SUMPRODUCT(A1:A10, A1:A10)
```

This formula would return the sum of all of the numbers in cells A1 to A10, ignoring the text in cells A6 to A10.

**Adding numbers with blanks**

If you are adding a range of cells that contains blanks, you can use the **COUNTA** function to count the number of non-blank cells in the range. Then, you can use the **SUM** function to sum the values in the non-blank cells.

For example, to add the values in cells A1 to A10, where cells A2 to A5 contain blanks, you would enter the following formulas:

```
=COUNTA(A1:A10)
```

```
=SUM(A1:A10, A6:A10)
```

These formulas would return the number of non-blank cells in cells A1 to A10, and the sum of the values in the non-blank cells.

**Adding numbers with a range of values**

If you want to add a range of numbers that has a range of values, you can use the **SUMIF** function. The **SUMIF** function has the following syntax:

```
=SUMIF(range, criteria, [sum_range])
```

Where:

**range**is the range of cells that you want to sum.**criteria**is the criteria that you want to use to select the cells that you want to sum.**[sum_range]**is an optional range of cells that you want to sum. If you omit**[sum_range]**, the**SUMIF**function will sum the values in the**range**.

For example, to add the values in cells A1 to A10, where the values are greater than 10, you would enter the following formula:

```
=SUMIF(A1:A10, ">10")
```

This formula would return the sum of all of the values in cells A1 to A10 that are greater than 10.