Example of adding using the column method:

Calculate 3491 + 5234

Start with the units column on the right and work your way along the columns to the left.

1 +4 = 5

So a 5 is placed underneath lining up with the units column.

Now add the numbers in the tens column.

9 + 3 = 12

This number is greater than 10 so place the 2 underneath and carry the \textcolor{red}{1}. The \textcolor{red}{1} will be added on in the addition of the next column.

The hundreds column is next.

4 + 2 =6

Don’t forget the \textcolor{red}{1} that has been carried over.

6+\textcolor{red}{1} = 7

So the number written underneath the hundreds column is 7.

The thousands column is done in the same way.

3+5 = 8

So,

3491 + 5234 = 8725