# How do you write #0.000000001# in scientific notation?

##### 2 Answers

#### Explanation:

Because we need to move the decimal point 9 places to the right, the exponent for the

#### Explanation:

Some people state "move the decimal point"

I state "fix the decimal point and move the numbers".

Reason:

Consider the value 1.0

Now consider the modification

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The target for this number is to end up with

But 1.0 is not the same value we started with. So we need to include (without applying it) a correction so that the actual overall value becomes the same.

So we have

But another way of writing