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How good are your maths.....
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integrale
 


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That's really sad - and who is Carol what's-her-name?

(OK , I used to be a math teacher...)
  
Post #4638987th May 2009 4:16 pm
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shopbobby
 


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9/10 Confused
It was the last one that got me, so I got my Yr9 14 yr old to take the test, glad to report that he also got the last one wrong Very Happy (However he did guess it right first time, but i questioned him so he changed his mind! and got it wrong)
I couldnt of coped if he got a better score than me Embarassed

However the level dosent surprise me that much, talking to his teachers the work they are doing now and the results from tests means he would get a GCSE B if he took it today. Still got 2 years of study to go. Exclamation
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Post #4639007th May 2009 4:20 pm
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stapldm
 


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I got 10/10 but had to deduce the last Q; it didn't look like two graphs I knew so it must have been the other...

I remember my Maths O-Level paper was a lot harder than this, with lots of solve x when ducks are equal to asteroids type equations, and calculate the angle of a triangle if the sides have these dimensions, and if a train was travelling towards London at 60MPH then how many hours late could it be without being classified as late types of questions. I was/am utter Censored at maths too.

Bear in mind that :
1) In the actual exam, although the bulk of questions would be like these to assess basic understandings, a few questions would be a lot harder and would be used to separate the Ds from the A*s
2) This test was created by the media and therefore will have been biassed to allow it to illustrate a story. I'm guessing the point at the time it was created was that exams are much easier than they used to be. Again. Again.
Chief Ed wrote:
Blow the cobwebs off that "exams are getting easier" story Daphne! It my be a slow news week but thankfully it's school exam time!

3) It's still a good feeling to get high scores, even when you know it's a fix Smile Thanks for the 3 minute diversion from work Thumbs Up Right; Back on my head...

Edit : Is it me, or are the questions in this the same as the 11+ papers when they existed?
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Post #4639017th May 2009 4:26 pm
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BBS SPY
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Last one wrong too Embarassed

Actually, i think i am really poor at maths, But i use Pi all the time, so that was lucky, and I actually remember having to knock up a bit of code to convert Hex to centigrade values correctly with an almost identical curve plot to that.

But trust me, i can't add up the score on 3 darts in a reasonable time to save my life.

Perhaps its and age thing.

I was schooled in an age where calculators started to become the norm, i took mine apart in histort to see how it worked, i guess some things never change, Anyway more or less since then i have always had technology in some corm constantly by my side to lean on. And i noted that very few of the questions were outright sums and those that were, were actually the hardest for me.

Perhaps older people might have found those type questions easier yet things like Pi harder.
  
Post #4639077th May 2009 4:38 pm
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npinks
 


Member Since: 31 Jan 2008
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for those who want a little bit more of a question this was posted on another forum i pop into

Quote:
Ok my little sister is stuck and I can't work out how to do the question either so I put it to you guys to have a crack and see if anyone knows it, here goes.

In this question, a + b are numbers where a = b + 2
The sum of a and b is equal to the product of a and b
Show that a and b are not integers.

I can't do it but I'm sure someone can.


His sister is in year 9 apparently (Year 9 of Uni presume as i ain't a clue)
  
Post #4639167th May 2009 5:14 pm
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Little 5
 


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Post #4639177th May 2009 5:15 pm
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Disco3newbie
 


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9/10

Better see if I can go pass my Math's O level now!
  
Post #4639207th May 2009 5:25 pm
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JMC
 


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npinks wrote:
In this question, a + b are numbers where a = b + 2
The sum of a and b is equal to the product of a and b
Show that a and b are not integers.

To begin with, I thought:

a=3 and b=1 since

1(b) + 2 = 3 (a)
1(b) x 3 (a) also = 3

However, I cannot show that they are not integers as both 1 and 3 are integers........... Confused

will keep looking at it.......... Whistle

Edit........ Embarassed That's wrong as I haven't read the question fully...... Embarassed Censored
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Last edited by JMC on 7th May 2009 5:39 pm. Edited 1 time in total 
Post #4639257th May 2009 5:34 pm
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Little 5
 


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Post #4639267th May 2009 5:36 pm
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drmcw
 


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a+b=ab
a=b+2
=>b+2+b=(b+2)b
2b+2=b^2+2b
2=b^2
b=square root of 2

How's that?

Wish I knew as much about Discoveries though!
  
Post #4639327th May 2009 5:48 pm
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JMC
 


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Looks good to me......... Whistle
 The older I get, the more I realise that people confuse wrinkles for wisdom Smile
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Club Walnut Sniffers
 
 
Post #4639347th May 2009 5:58 pm
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stapldm
 


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npinks wrote:

In this question, a + b are numbers where a = b + 2
The sum of a and b is equal to the product of a and b
Show that a and b are not integers.


a+b = a * b

a = (a+b) / b

but a = b + 2

so

b + 2 = (a+b) / b

b + 2 = (a/b) + (b/b)

b+ 2 = 1 + (a/b)

b = (a/b) - 1


... and at this point I give up randomly doing stuff and leave it alone exactly like I would have done in the exam Rolling with laughter
 Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone? 
 
Post #4639577th May 2009 6:37 pm
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Little 5
 


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Post #4639637th May 2009 6:53 pm
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zaphod
 


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10/10 and I'm not good at maths - couldn't get my higher Big Cry

Is this not one of the junior school SATS tests?
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Post #4639667th May 2009 7:00 pm
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Little 5
 


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GCSE Apparently
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Post #4639697th May 2009 7:02 pm
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