# Long Multiplication

**Long Multiplication** is a special method for multiplying larger numbers.

It is a way to multiply numbers larger than 10 that **only needs your knowledge of the ten times Multiplication Table**.

Let us say we want to multiply

612 × 24

- First we multiply
**612 × 4**(=2,448), - then we multiply
**612 × 20**(=12,240), - and last we add them together (2,448 + 12,240 = 14,688).

But we can do better!

When we multiply **612 × 20** we only need to multiply **612 × 2 **and **place the result one column over** (so it is the same as multiplying by 20).

We just have to be careful about** lining up the columns**. Here is how to do it (press the play button):

We could also put a zero where the space is, like this: |

## More Than Two Digits

The same idea works when multiplying by more than two digit numbers. We just have to move over more spaces:

Have a try yourself with these Long Multiplication Worksheets