Math Is Fun Forum
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#551 Re: Introductions » Hi Everyone » 2006-12-15 18:45:00
Welcome White Diamond! 
#552 Re: Dark Discussions at Cafe Infinity » Mental arithmetic making you look bad? » 2006-12-15 15:38:17
Devanté wrote:mikau wrote:Pretty much exactly what I just said, Mathsy! :-) So thats two votes!
Three votes. ;D
It would be better to enter the numbers on your keyboard, takes too long to find the number in my opinion.
I Agree as well so thats 4 votes
Hey, i voted yes too!
So that's 5 then!
#553 Re: This is Cool » Cool Subtraction For Kids » 2006-12-15 06:50:31
Sorry to go a little off topic but I just remembered this trick when I read this post:
98 ÷ 49
Cancel out the 9's leaves:
8 ÷ 4 = 2
Thus, 98 ÷ 49 = 2
Can you please explain further how this works, because I've tested variations such as 29/92 and 95/39 and they don't work...
#554 Re: Dark Discussions at Cafe Infinity » Mental arithmetic making you look bad? » 2006-12-15 06:25:45
Yeah, perhaps a scoreboard or something of the like could be implemented or an entire server could be created (I expect it shouldn't be too hard) so people can race against each other and stuff. It could have lots of people if it's good enough, it would be fantastic.
I also support an input box so you can type your answers.
Oh, and I was wondering:
For multiplication with numbers of 2 digits or more, do you actually run through the whole algorithmic working in your head, do you do multiplication by parts (e.g 12*15=10*15+2*15), or do you use your own top-secret formula 
?
#555 Re: Dark Discussions at Cafe Infinity » Eragon: The books, the movie » 2006-12-15 01:14:03
I saw Eragon yesterday - it was quite interesting. I've yet to read the book although I have borrowed it and intend to read it after I've done some more maths 
.
#556 Re: Dark Discussions at Cafe Infinity » Attention: The Arctic is to melt mostly by the summer of 2040 » 2006-12-14 19:10:18
Oh Noes What About ``the Polar Bears!!!
#557 Re: Exercises » About the Exercises » 2006-12-13 18:05:10
I think it would help a great deal if the exercises were ordered into categories, is there any chance of it being done very soon?
#558 Exercises » Basic algebraic terms » 2006-12-13 18:01:57
- Toast
- Replies: 2
1. Identify and pair the following like terms:
, , , , , , , , , , , ,
2. Collect the following like terms and write in simplest form:
a) 3x+5x
b) 2ab-3ab
c) 5cd³-2cd³+8cd³
d) 6s+s+5t
e) z²+z-2z
f) 4ab+3a+b-ab-b+ab
g) 5ad²+6a²d-0.5ad²+a²d
h) 9mn+m³n-m²n+6mn³-mn-1mn³+2m³n
[Hint: Remember when re-arranging that if there is a negative sign in front of a term then it will stay there, no matter where you move the term]
#559 Re: Guestbook » goodbye...again*sighs* » 2006-12-11 04:47:46
Wow, very close Devante... +1 leet points
"Omg i got to go back to leet school, shame on me for not being able to type the leetz lawls!"
And yes, as you see I really do need to refine my leet, it's horrible... but according to wikipedia i'm correct 
#560 Re: Guestbook » wow this is like so totally awesome » 2006-12-11 04:43:00
What did they use to comment on?
#561 Re: Guestbook » goodbye...again*sighs* » 2006-12-11 01:58:05
0/\/\g 1 g2g 134(l< 70 1337 5(l-l00l_, 5l-l4/\/\3 0/\/ /\/\3 F012 /\/07 1331/\/g 413135 70 7yp3 73l-l 1337z l_4\/\/l_5!!!!!!!!!!!!!!
+1 leet points for whoever can decrypt this
#562 Re: Introductions » hello everybody » 2006-12-10 15:35:06
Great idea mathsy!
And Welcome suha!!!
#563 Re: Introductions » Hello everybody » 2006-12-10 06:27:03
WOOT! My previous post was my 400th!
This calls for smilie spamming! I've got the whole smilie gang over to celebrate! 
I woulda liked it to have been this one, but, well, I missed it 
BUT THATS OK 
(My 397th post is significant because it is a cuban prime , and it is also 3 from my 400th! WOOT!)
#564 Re: Jokes » he he he » 2006-12-10 06:19:22
We should word-censor LMAO to LMBO...
...just a thought
#565 Re: Help Me ! » ........help needed urgently » 2006-12-10 06:04:35
How do you get from your matrix to the probabilities of 1/7 and 2/7?
#566 Re: Introductions » Hello everybody » 2006-12-10 05:37:18
hehe, thanks suha
WOOT this is my 397th post!
#567 Re: Introductions » HI aman here » 2006-12-10 04:26:19
Welcome vipaman!
Where'd that NASA avatar go, it looked pretty cool
#568 Re: Help Me ! » Somebody Please Help Me!!! » 2006-12-10 04:17:16
#569 Re: Guestbook » goodbye...again*sighs* » 2006-12-10 01:09:36
0/\/\g 1 g2g 134(l< 70 1337 5(l-l00l_, 5l-l4/\/\3 0/\/ /\/\3 F012 /\/07 1331/\/g 413135 70 7yp3 73l-l 1337z l_4\/\/l_5!!!!!!!!!!!!!!
#570 Re: Help Me ! » Simplifying Fractions » 2006-12-10 01:03:00
Why, what a Spiffing good job chaps!
#571 Re: Guestbook » goodbye...again*sighs* » 2006-12-10 00:56:24
spkn l33t is gd fr u cuz den u gt leik rly gud at tlkn bowt stuf n lolz. al teh smrt ppls spk l33t cuz leik u gta ues l33tspk alot in leik mats n stuf.
#572 Re: Help Me ! » Hard(ish) Geometry Problem 3 » 2006-12-09 18:03:27
Yeah, if we know the ratio then what is the use of pronumerals? Sadly I won't know the answer until I go back to school in a little under 2 months...
#573 Re: Maths Is Fun - Suggestions and Comments » Infinity » 2006-12-09 17:56:48
Wow what an excellent read! Infinity is really a subject which needed to be addressed and I think you did it quite well. I got kinda confused with why ∞-∞=/=0 and ∞/∞=/=1, so maybe you could explain that a little? I dunno good work.
Just a question:
If real numbers lie between -∞ and ∞, then where to complex numbers lie?
#574 Re: Introductions » Hello! is anybody here? » 2006-12-09 16:07:15
Wow rawrly? There was this guy in year 7 who was 10 years old!!!
#575 Re: Dark Discussions at Cafe Infinity » swearing...(bad language) » 2006-12-09 16:03:12
Awww, I wanted to start a quote chain, but it seems like you can only have 3 quotes quoted at a time