Go to navigation
It is currently Thu Dec 08, 2016 4:08 am

All times are UTC




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: Is there an easier way?
PostPosted: Fri Jul 08, 2011 10:20 am 
Offline

Joined: Wed Aug 25, 2010 2:58 pm
Posts: 496
Question:

Put >, < or =

10/26 + 5/8 + 1/4 ___ 0.75 + 0.8

My DC started multiplying the denominators together to find a common factor. This seemed very long winded. I suggested making the fractions into approx decimals Eg 0.38ish+ 0.6ish +0.25 = 1.23ish which is < 1.55.

Is there an easier way that I am missing?


Top
 Profile  
 
PostPosted: Fri Jul 08, 2011 10:36 am 
Offline

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8113
ugh... reckon "..ish" is the answer - time for a bit of estimating...

rt hand side is as you say 1.55

left hand is approx 10/25 (0.4) + 1/4 (0.25) + 5/8 (about 0.6 as you say). added up they don't get anywhere 1.55 so answer is <.

:oops: :?


Top
 Profile  
 
PostPosted: Fri Jul 08, 2011 2:01 pm 
Offline

Joined: Tue Sep 01, 2009 3:38 pm
Posts: 2083
Location: Maidstone
Blitz wrote:

My DC started multiplying the denominators together to find a common factor.


Its probably more long winded but more straightforward. Did he remember to check that they were in the lowest? That will make it slightly easier to work out. In this case 10/26 will be 5/13

_________________
Impossible is Nothing.


Top
 Profile  
 
PostPosted: Fri Jul 08, 2011 2:29 pm 
Offline

Joined: Fri Nov 17, 2006 8:54 pm
Posts: 1770
Location: caversham
Blitz wrote:
Question:

Put >, < or =

10/26 + 5/8 + 1/4 ___ 0.75 + 0.8

Is there an easier way that I am missing?


As an approximation try converting the fractions in near hundredths,

40/104 + 60/96 + 25/100 = approx. 125/100 = 1.25 so it is a lot less than 0.75+0.8=1.55.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

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