# Add the numbers: 1,055 + 9,391 + 2,123 = ? Calculate the natural numbers sum and learn how to do the addition, column adding method, from right to left

## The numbers addition to perform: 1,055 + 9,391 + 2,123

### Stack the numbers on top of each other.

#### And so on...

 1 0 5 5 9 3 9 1 + 2 1 2 3 ?

## Add column by column; start from the column on the right.

### Add the digits in the ones column:

#### 9 is the ones digit. Write it down at the base of the ones column.

 1 0 5 5 9 3 9 1 + 2 1 2 3 9

### Add the digits in the tens column:

#### 1 is the hundreds digit. Carry it over to the hundreds column. Write the digit above that column. Add it with the rest of the digits in that column.

 1 1 0 5 5 9 3 9 1 + 2 1 2 3 6 9

### Add the digits in the hundreds column:

#### 5 is the hundreds digit. Write it down at the base of the hundreds column.

 1 1 0 5 5 9 3 9 1 + 2 1 2 3 5 6 9

### Add the digits in the thousands column:

#### 1 is the ten thousands digit. Write it down at the base, next to the thousands digit.

 1 1 0 5 5 9 3 9 1 + 2 1 2 3 1 2 5 6 9