From: http://www.mathsrevision.net/gcse/pages.php?page=8
You can tell if a fraction will be an exact or a recurring decimal as follows: fractions with denominators that have only prime factors of 2 and 5 will be exact decimals. Others will be recurring decimals. This means that when you write the denominator of a fraction in its prime factor decomposition, if there are only 2’s and 5’s you will get an exact decimal.
For example, 1/8. The denominator is 8, which is 2 × 2 × 2. There are only 2’s in the prime factor decomposition so the decimal will be exact (and it is 0.125).
On the other hand, 2/9 has denominator 9 = 3 × 3 and 3 isn’t a 2 or a 5 so we have a recurring decimal (0.222222….).
So, you can leave comments and ask questions if you like.
The first time you comment, your comment and details will have to be ‘moderated’. From then on you’ll be allowed to comment as you please. So make sure you remember your details, and no messin’!
For security reasons, please use your school email address to log on. You should soon know how to check this email from home anyway.
By: Mr Brewin on August 31, 2007
at 9:12 am
im impressed
By: Fatima on August 31, 2007
at 6:14 pm
oh my god look it showed up thats way cool
By: Fatima on August 31, 2007
at 6:14 pm
loool this is fun
By: Fatima on August 31, 2007
at 6:15 pm
This is pretty kool and professional
Question: Is this that programme you wrote @ the end of last term?? or is this sumthing else??
Are there gonna be anymore topics posted on this site other than decimals, etc???
But so far, it looks pretty helpful
x
By: Dexter Coker on August 31, 2007
at 7:47 pm
i used da wrong email…sorry
i didn’t read da info about leaving a comment
By: Dexter Coker on August 31, 2007
at 7:49 pm
This is something else… The software thingy is on the other post.
The idea is that this can be used to post some homeworks, revision notes, that sort of thing… Then I can leave you to discuss it all amongst yourselves!
Or you can ask questions and stuff, and if I’m in the mood I might reply ;-P
By: Mr Brewin on August 31, 2007
at 11:06 pm
I dont know how this works
By: laura on September 3, 2007
at 8:19 pm
and one more thing sir. “DELICIOUS SHS MATHS LINKs” um.. delicious?! right….
By: freya on September 3, 2007
at 9:16 pm
Delicious is the name of a link-sharing site!
http://del.icio.us
It’s quite good actually.
By: Mr Brewin on September 3, 2007
at 10:19 pm
And Laura, you don’t need to know how. Simply that it does
By: Mr Brewin on September 3, 2007
at 10:20 pm
why is deola called dexter?
By: laura on September 4, 2007
at 4:52 pm
also i think u should be able to see who’s online so we can have like a chat room as well
By: laura on September 4, 2007
at 4:58 pm
part from that im liking this whole thing
By: laura on September 4, 2007
at 4:59 pm
haaahahahaha. yeah i agree with laura. maybe taking this maths site to the next level is what it needs.
By: Katie on September 4, 2007
at 7:51 pm
hello!
have u noticed there is a tiny smiley face at the bottom of this page?
By: laura on September 4, 2007
at 7:52 pm
HA. how did you notice that? i thought it was a fly or something.
By: Katie on September 4, 2007
at 7:55 pm
i dunno cos i was like ooh i wonder what the red asterix by Name and Email means? so looked for it and then found a tiny little face!
hows life then katie?
have u had tea yet?
what did u have?
joseph cooked my the best spag bol ever!
xxx
By: laura on September 4, 2007
at 7:57 pm
oh its alright. my mum left a recipe on the work surface when i got home, and i cooked it, and it was awful.
and my sister tried to fix her mp3 player, so i suggested she opened it up and had a poke around but then she dropped this screw about — this big in the cellar and she got angry. so we had to get on our knees and search for it, but couldnt find it, and she blamed it all on me. :C
but apart from that its going great.
http://www.youtube.com/watch?v=Nq5RxNNEU9I
check out this maths video some guy from chemistry camp sent me.
it adds a whole new dimension to multiplication.
xxx
By: Katie on September 4, 2007
at 8:02 pm
thats really funny
im so starting to do that!
thats weird i jus posted a coment but didnt work
weeeeeird
so how did u find recurin decimals??
what u up to???
im watching kaye west on the friday night project
what u up to this weeknd?
xxx
By: laura on September 4, 2007
at 8:17 pm
So as this is the maths website…
anyone feel like patching up my terrible maths knowledge and teaching me how to do long division?
I have actually felt really sad since maths this morning because I’ve never been taught this fundamental skill everyone else seems to know..
and now I have to go and do History, which is making my evening even worse.
I might cry.
xxx
By: Grace Mullally on September 4, 2007
at 10:03 pm
We’ll go over it Grace!
Laura – I’ve put a little counter in the side bar. Not sure if it’s working yet, but while it won’t yet tell you who’s online, it should say how many people are on the site at any one time.
All this will change shortly anyway when the new GDST network goes live. Then you will be able to IM etc. more easily. So they say. I won’t hold my breath!
By: Mr Brewin on September 5, 2007
at 9:37 am