Write 5.5 × 10^9 as a normal number

Step by step

The question

Question: write 5.5 × 10⁹ as a normal number.

1 Read the power

10⁹ is 1000000000.

Times 1000000000 makes the number bigger, so the point moves 9 places to the right.

2 Move the point

There are not enough digits after the point.

We write 8 zeros at the end.

Zeros there do not change the number.

The point is at the end now, so we leave it out.

So 5.5 × 10⁹ = 5500000000.

Careful!

The power is not the number of zeros.

It is how many places the point moves.

5.5 already has 1 digit after the point.

3 Check

Let's check: times 1000000000.

5.5 times 1000000000 is 5500000000.

It works!

Let's look back.

First: read the power.

Then: move the point.

Last: check.