# Addition in Columns

We can do addition by writing one number below the other

and then add **one column at a time**, like this:

And it works for bigger numbers, too:

But sometimes **two-digit numbers can get in the way** like this:

**THIS** is how it **should be done**:

Did you see how we split the 12 into **1 Ten** and **2 Ones**?

We then sent the** 1 Ten** to the** top of the Tens column,** so we will remember to add it when we do the Tens.

And there is a nice clear space for the Tens answer below.

Here's another example:

Now practice on this Column Addition (with Carrying) Worksheets.

### Above or Below?

Your teacher may want you to put the "1" **below** like in this example.

Above or below does not really matter, we just need a good place to put the "1" so we **don't forget it**!

## What About Bigger Numbers?

The same method works with numbers in the hundreds, thousands and so on.

But we must be careful to **move over one column** each time.

Like this: