Multiplying by two is quite simple, the rule is following the pattern we saw when multiplying by twelve and multiplying by seven but this time the neighbor is ignored.

## The Rule For Multiplying By Two

*Double the number.*

We will still look at an example, as we are only interested in the number we will shrink our red box to just cover the number we are looking at.

## An Example - Multiplying 483 By 2

For our example we will look at 483 x 2 and we will set it up as we have done previously.

**Step 1**

Placing our red box over the last digit to the right, we have the number 3. So we double it to get 6 which we write.

**Step 2**

Moving the red box to the left we now are looking at number 8, doubled is 16 so we write 6 and put a dot above it to indicate the 1 that we need to carry.

**Step 3**

Moving left again we come to the number 4. We double it to get 8 then add the 1 from the carry to give 9, which we write.

**Last Step**

In this case the last step involves doubling zero which is still zero so we ignore this step and our equation is complete and the answer is 966.

## Practice Multiplying by Two in your Head

To help speed up your mental calculations it helps if you can simply look at a digit and instantly know the double value. For most people this will take very little practice.

Your conscious thought should be something like 6 ... 12, not something like 6 ... 6 times 2 is ... 12.

If you have any comments or questions please leave a comment below.

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