# Add the numbers: 99 + 94 + 111 + 109 + 100 + 111 + 104 + 103 + 91 = ? Calculate the natural numbers sum and learn how to do the addition, column adding method, from right to left

## The numbers addition to perform: 99 + 94 + 111 + 109 + 100 + 111 + 104 + 103 + 91

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

#### And so on...

 9 9 9 4 1 1 1 1 0 9 1 0 0 1 1 1 1 0 4 1 0 3 + 9 1 ?

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

### Add the digits in the ones column:

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

 3 9 9 9 4 1 1 1 1 0 9 1 0 0 1 1 1 1 0 4 1 0 3 + 9 1 2

### Add the digits in the tens column:

#### 3 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.

 3 3 9 9 9 4 1 1 1 1 0 9 1 0 0 1 1 1 1 0 4 1 0 3 + 9 1 2 2

### Add the digits in the hundreds column:

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

 3 3 9 9 9 4 1 1 1 1 0 9 1 0 0 1 1 1 1 0 4 1 0 3 + 9 1 9 2 2