I have a test tomorrow and I am wondering how to solve the following
4.5 * 10^5 * 3,7 * 10^3
_______________________
5 * 6 * 10^2 * 2,3 *10^4
I think it has to be a exponential notation and ^10
My answer:
4,5 * 3,7 * 10^5 +3 = 16,65 * 10^8
__________________________________
5 * 6 * 2,3 * 10^2 + 4 = 69 * 10^6
I hope you can help me.
[editline]07:21PM[/editline]
Also i'm dutch so I don't know how to translate most of the things.
[editline]07:22PM[/editline]
Please only respond if you can help me.
-snip-
Well in dutch it says it has to be calculated in "Machten van 10" That is a crucial part and I have no idea how to translate it.
[quote=exiv2;24805982]i have a test tomorrow and i am wondering how to solve the following
4.5 * 10^5 * 3,7 * 10^3
_______________________
5 * 6 * 10^2 * 2,3 *10^4
i think it has to be a exponential notation and ^10
my answer:
4,5 * 3,7 * 10^5 +3 = 16,65 * 10^8
__________________________________
5 * 6 * 2,3 * 10^2 + 4 = 69 * 10^6
i hope you can help me.
[editline]07:21pm[/editline]
also i'm dutch so i don't know how to translate most of the things.
[editline]07:22pm[/editline]
please only respond if you can help me.[/quote]
16,65 * (10^8/10^6)
__________________________________
69 * (10^6/10^6)
16,65 * 100
__________________________________
69
1665
__________________________________
69
[IMG]http://www.mileanhour.com/files/2010/8/Fulloffuck.jpg[/IMG]
Sorry, what I just said there was wrong. Multiplying them wouldn't work, forget what I said.
It means as a power of 10, so 10^2, 10^3 etc.
That!
Hey OP, take a look at my answer
My teacher said that you could just calculate it but then it would be wrong.
[editline]07:30PM[/editline]
I'm sorry FreeThinker but that is wrong.
Try this:
1665 * 10^6
__________________________________
69 * 10^6
And then it would come back to the answer I posted.
What does your teacher want exactly?
Wait, let me get my information book.
[editline]07:44PM[/editline]
"When multiplying numbers with powers, you have to add or deduct the powers.
Example:
- 7 * 10^3 * 10^4 = 14 * 10(3+4) = 14 * 107
- 7 * 10^5 * 10-^2 = 14* 10(5-2) = 14 * 10^3"
Translated as good as I could.
Sorry, but what is wrong with
(4.5 * (10^5) * 3,7 * (10^3))
_______________________
(5 * 6 * (10^2) * 2,3 *(10^4))
?
[editline]08:17PM[/editline]
Which would equal 21.4492754 according to my TI-83
[QUOTE=Codename 47;24807023]Sorry, but what is wrong with
(4.5 * (10^5) * 3,7 * (10^3))
_______________________
(5 * 6 * (10^2) * 2,3 *(10^4))
?
[editline]08:17PM[/editline]
Which would equal 21.4492754 according to my TI-83[/QUOTE]
or
1665
____
69
as I've mentally calculated in the 4th post (probably missed something due to attention problems)
[QUOTE=FreeThinker;24807755]or
1665
____
69
as I've mentally calculated in the 4th post (probably missed something due to attention problems)[/QUOTE]
Ah, I see.
Now, out of pure interest, why is that wrong?
[QUOTE=Codename 47;24808204]Ah, I see.
Now, out of pure interest, why is that wrong?[/QUOTE]
Well I don't know about his school, but our school punishes us for being smart and we are not allowed to do problems in our head or on a calculator and we have to work it out.
Thanks, test went great.
Post a picture of your score
I don't have it yet. I will when I get it back.
[editline]06:29PM[/editline]
To make this clear, I FEEL like the test went great.
7.2/10. Thanks guys.
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