**Learn to Add**

The **add ** is the first of the fundamental operations of arithmetic. It is represented with the symbol ** " + " **.

It consists of increasing a specific number **(add up)** the value of others. So this operation is also called **addition**.

The numbers we've added are called addends, in Spanish **sumandos**, and the result is called **sum or total**.

To add several numbers, we are going to put them underneath each other so that they match the units, tens, hundreds etc ... Draw a line under the last addends and orderly proceed to add all columns, starting with the units, then tens and so on until we reach the last column.

**We are going to see this example: 7.653 + 3.782 + 9.214**

7 | 6 | 5 | 3 | ||

3 | 7 | 8 | 2 | ||

+ | 9 | 2 | 1 | 4 | |

2 | 0 | 6 | 4 | 9 |

**3 + 2 + 4 = 9**, We put the**9**under the units.**5 + 8 + 1 = 14**, We put the**4**under the tens and we "store" (carry) 1 that will add to the next column.**6 + 7 + 2 = 15**, 15 + 1 (which we carried) = 16. We put the**6**under the hundreds and we "carry" 1 that will add to the next column.**7 + 3 + 9 = 19**, 19 + 1 (which we carried) = 20. As we have no columns to add, we put the 20.

And we have already concluded:** 7.653 + 3.782 + 9.214 = 20.649 **

(twenty thousand six hundred and forty-nine)