Standard Form

If you ever need to write very large or very small numbers then consider using
Standard form - (sometimes called scientific notation). It's a good way of
avoiding having to write lots of zero's!

Consider this 10³ = 1000

Then 2 X 10³ must equal 2000

So 2000 can be written as 2 X 10³ and that is standard form

There are two rules to follow
When writing a number in standard form you need to write down two parts.

The first part you simply write is a number between 1 and <10

The second part is 10 raised to the correct power

Example
2567000 in standard form:

is 2.567 X 10 ^ 6 (think of it as the number moving 6 places right)

In words you would say this is:
" two point five six seven times ten to the power six"

But what happens with small numbers

Example
0.00000345 in standard form:

is 3.45 X 10^(-6) (think of it as the number moving six places left)
"Three point four five times ten to the power of minus six"

You need to remember the two rules mentioned above.

Changing numbers into and out of standard form is fairly easy once you know

the rules.

Link to GCSE.com for a good overview