# Addition in Columns

You can do addition by writing one number below the other

and then add

**one column at a time**, like this:
(Practice on this Simple Column Addition Worksheets)

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 Units?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 (done a little faster):

## Above or Below?Your teacher may want you to put the "1"below like in this example. Above or below does not really matter, you just need a good place to put the "1" so you don't forget it! |

## What About Bigger Numbers?

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