You are used to the British system?

Ok, let's change this.

Um... My computer is besides me. I am 2400 miles away from you. How far is my computer from you?

2.2?

Don't you think that it's 2400 miles away from you? Do you get it or, do you still have something somewhere you're not sure about?

I just completely don't get it. All the book really says is to change km to m? I don't know how to do that and when I answer the question I have to put in Type in scientific notation, 4 x 1013 would be typed in as 4e13 like this? Well I don't how to get the answer from 8.86 X 10e10

In fact the answer is .

Let's take a smaller distance. You are in your house. The market is 10 yards away from your house. How far are you from the market, in yards?

I know every 1 yard is 3 feet so 10 x 3=30ft
so if you want yards wouldn't it be 10?

Right! But you didn't have to calculate anything here! The answer was already given to you! Do you see now? :)

Yes! So for "A" I did multiply 10 X 8.86 = 88.6 now the total answer is 88.6e12... I just honestly don't know how 12 is even in there or how I got it because I just figured 10e10 so I just started putting numbers down till I got the right answer

Ok, now to the question.

The distance of the probe is 8.86e10 km from the Earth.

Recall that 1 km = 1000 m.

So, in metres, 8.86e10 km = 8.86e10 x 1000 = 8.86e13 m

This is using scientific notation. It's just like:



Now, we come to the time it takes. Can you find it?



So,

So would I set up this problem like this time taken=88.6/3.00=29.5
or time take=88.6/1000

So, we have:



You need to put everything in the number.

Maybe the scientific notation is not clear...





Getting back,

Im sorry, I still don't get it. I am sorry if I am frustrating you =/

It's okay. It's just that I am thinking about how to go and make you understand... maybe this way...

Find:
I) 2 x 10 = ?
ii) 58 x 100 = ?
iii) 6.5 x 10000 = ?
iv) 3 x 10e2 = ?

20
5800
65000
300

For the last one, no.

3 x 10e2 = 3 x 10 x 100 = 3000

okay?

If this was: 3 x 1e2, then this becomes 3 x 1 x 100 = 300

OK

Ok, now this one:

3e5 x 6e2 = ?

300,000 x 600= 180,000,000

Correct. Now, you'll see something too.

180,000,000 in scientific notation is 1.8 x 10^8 , or 1.8e8

What happened?

3e5 x 6e2 = (3 x 6) x e(5 + 2) = 18e7

Now, this is 18 x 10^7 right?

or

(1.8 x 10) x 10^7

This becomes 1.8 x 10^8

Try these now, using this new way of multiplying numbers, giving your answer in scientific notation.

1e16 x 8e18 = ?

5e12 x 3e8 = ?

9e7 x 7e6 = ?

I am starting to understand so would I use these tools to figure out "B"