# Add the numbers: 7,921 + 3,222 = ? Calculate the natural numbers sum and learn how to do the addition, column adding method, from right to left

## The numbers addition to perform: 7,921 + 3,222

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

#### And so on...

 7 9 2 1 + 3 2 2 2 ?

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

### Add the digits in the ones column:

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

 7 9 2 1 + 3 2 2 2 3

### Add the digits in the tens column:

#### 4 is the tens digit. Write it down at the base of the tens column.

 7 9 2 1 + 3 2 2 2 4 3

### Add the digits in the hundreds column:

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

 1 7 9 2 1 + 3 2 2 2 1 4 3

### 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 7 9 2 1 + 3 2 2 2 1 1 1 4 3