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help needed please VR

Posted: Fri Apr 20, 2012 11:07 am
by amandee
Hi all,

I need help with a question from Learning Together test 09 question 73 answer for this question is3 sq root x-2

144---->10

81------>7

49------>5

25------>(----)

Thanks in advance for your help :D

Re: help needed please VR

Posted: Fri Apr 20, 2012 11:10 am
by faitaccompli
144---->10 = 10 + 2 = 12 (x 12)

81------>7 = 7 + 2 = 9 (x 9)

49------>5 = 5 + 2 = 7 (x 7)

25------>(----) = 5 x 5 which means the answer is 3 as 3 + 2 = 5 (x5)


But this is the non mathematical not quite got an O level reply although the answer was the same

Re: help needed please VR

Posted: Fri Apr 20, 2012 11:14 am
by Sally-Anne
144 = 12 x 12, 12 - 2 = 10

81 = 9 x 9, 9 - 2 = 7

49 = 7 x 7, 7 - 2 = 5

25 = 5 x 5, 5 - 2 = 3

Knowledge of square numbers is essential for 11+ maths.

On a separate note, Amandee, the Redbridge VR test is set by GL ASsessment, and Learning Together's resources are not appropriate practice materials for the test. You can find the correct materials for both VR and NVR here http://www.elevenplusexams.co.uk/shop/Essex-Redbridge/" onclick="window.open(this.href);return false;

Edit: Cross-post with faitaccompli - she snuck in while I was hunting down the link!

Re: help needed please VR

Posted: Fri Apr 20, 2012 9:57 pm
by amandee
Hi,

Faitaccompli and Sally-Anne thanks so much for the prompt and detailed replies. You both made this question very easy to understand.

kind regards
amandee

Re: help needed please VR

Posted: Fri Apr 20, 2012 10:06 pm
by Sally-Anne
Hi amandee

I meant to say that the Redbridge (Essex) test is set by GL, and I have now edited my post accordingly.

Please make sure that you are using the right materials.

S-A