# How can doubling and halving help me multiply?

## How can doubling and halving help you multiply?

Everyone finds some numbers easier to work with than others.

If you have to multiply by a number you aren’t too sure about, it can sometimes help to half or double it.

### Example

If you have to do **4 X 6** and you’re not sure about the 4 times table, remember that **4** is **2 X 2**.

So you can half the **4** to make **2**. Then you have to double the **6** to make up for this.

So instead of doing **4 X 6** you can do **2 X 12**.

The answer is **24** for both.