Go to navigation
It is currently Sun Dec 04, 2016 8:15 am

All times are UTC




Post new topic Reply to topic  [ 12 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Perse paper 4
PostPosted: Mon Nov 26, 2012 5:40 pm 
Offline

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 987
Location: Birmingham
Please help.

Qu.16:
6764 / 76 = 76

Use this result to write down answers to the following:
A) 6764 / 76. (89 - I can see that)
B) 7.6 / 0.89 I can't work out how that could be anything other than 8.539... But I don't see how I would be using the info they gave to work this out.

Am I missing something obvious?

UmSusu

_________________
UmSusu


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 6:00 pm 
Offline

Joined: Thu May 10, 2012 8:30 am
Posts: 247
UmSusu wrote:
Please help.

6764 / 76 = 76


6764/76 isn't 76.


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 6:13 pm 
Offline

Joined: Thu Jan 03, 2008 8:26 am
Posts: 1324
Location: Watford, Herts
The actual question says: given 6764 / 89 = 76, write down
(a) 6764 / 76
(b) 7.6 * 0.89

We know 76 * 89 = 6764, so we then manipulate the decimal fractions.


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 6:43 pm 
Offline

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 987
Location: Birmingham
Sorry daveg, I mis-typed : I should have checked :oops: it was in fact as WP points out:
6764/89 = 76

Thank you WP, but my paper says 7.6 / 0.89 for the second part, not multiply. Do you think it is a typo on the paper then?

Thanks,
UmSusu

_________________
UmSusu


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 6:58 pm 
Offline

Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
UmSusu wrote:
Sorry daveg, I mis-typed : I should have checked :oops: it was in fact as WP points out:
6764/89 = 76

Thank you WP, but my paper says 7.6 / 0.89 for the second part, not multiply. Do you think it is a typo on the paper then?

Thanks,
UmSusu



No you don't need to multiply as the numbers will remain the same only the decimal point moves. In part (b) the question has 3 numbers after the DP ( .6 and .89) so the answer should have 3 numbers after the DP as well. It will therefore be 6.764


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 7:29 pm 
Offline

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 987
Location: Birmingham
I am sorry, I feel really dumb now: I still don't get it :roll:
When I do the sum on the calculator it comes to 8.5 something. My son put the same answer as you mention and I can only assume that they want you to play with the numbers to use one of them as the answer but 'the calculator says no'

_________________
UmSusu


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 7:42 pm 
Offline

Joined: Wed Jan 18, 2012 11:41 am
Posts: 4584
Location: Essex
The only sensible explanation if the original calculation is meant to help you is that it is a typo and the "divide" should be "multiply":

7.6*0.89 = 6.764.

7.6/0.89 = 8.539(and a lot more digits!) :roll:

_________________
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 7:50 pm 
Offline

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 987
Location: Birmingham
Thank you Toadmum :D

Once WP mentioned the multiplication option it made more sense, but I was worried I was still missing something glaringly obvious - DS didn't bother with that small detail of a typo and just put the number he assumed they were expecting: he said he was not going to waste his time :lol:

I am assuming then that everyone who sat the exam that year would have sat it with the misprint?

Thanks again

_________________
UmSusu


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 7:56 pm 
Offline

Joined: Sat Dec 03, 2011 3:14 pm
Posts: 625
6764 ÷ 89 = 76
Use this result to write down the answers to each of the following:

(a) 6764 ÷ 76
Answer: (a):


(b) 7.6 × 0.89
Answer: (b):

_____________

The above is copied from the paper I have. If the question is 7.6 / 0.89 then the answer cannot be arrived at using the above numbers because the number facts for that calculation are not given.

Maybe the X sign was not printed fully on your copy.


Top
 Profile  
 
 Post subject: Re: Perse paper 4
PostPosted: Mon Nov 26, 2012 7:59 pm 
Offline

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 987
Location: Birmingham
Thanks leanmeanmum, definitely a division sign on my copy but I printed it off some time ago when I was preparing DS1 - maybe they corrected since?

At least I can put that to rest - DS has left me to it now and says he is not coming back to review it anyway :lol:

_________________
UmSusu


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ]  Go to page 1, 2  Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
CALL 020 8204 5060
   
Privacy Policy | Refund Policy | Disclaimer | Copyright © 2004 – 2016