**Addition** is adding something on.

When you add things together, you get a total.

**Example**

Look at this problem. A number is missing.

You need to find its value. You can use addition.

6 | + | ? |
= | 17 |

**Answer**

You **add **a number to 6 to make 17? (17 is your total.)

17 - 6 = 11

So the missing number = 11

**Check**:

6 + 11 = 17