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PostPosted: Sun Sep 02, 2012 12:17 pm 
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Joined: Sun Apr 10, 2011 9:04 am
Posts: 87
Hi,

Can some plz explain these:

Question 40
(19 [15] 12) (10 [6] 3)
(27 [?] 20)

The answer is 23.

The relation I am building are these
19-4=15
10-4= 6
27-4=23 Answer

or
12+3=15
3+3=6
20+3=23 Answer

Just confused as only one number either on the left or right is being used

Question 41

(4 [12] 36) (2 [6) 18)
(5 [?] 45)

Same like the above question
4x3=12
2x3=6
5x3= 15 Answer

or

36/3=12
18/3= 6
45/3=15 Answer

Again one number on the right or left is being used

Question 43
(3 [5] 16) (4 [10] 28)
(5 [?] 10)
Answer = 0

Cant find any solution for this question.

Also DD had never encountered these type of questions using only one of right or left number to find the middle number.

Explanations of these above questions will be highly appreciated,

Regards

Sonia


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PostPosted: Sun Sep 02, 2012 12:31 pm 
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Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6966
Location: East Kent
1 add R and L numbers together

19 +12 = 31

subtract 1

31 -1 = 30

half it

30/2 =15

s0 27 +20 =47

47-1 = 46

46/2 =23


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PostPosted: Sun Sep 02, 2012 12:37 pm 
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Joined: Wed Jan 11, 2006 7:10 pm
Posts: 8204
Location: Buckinghamshire
Sonia wrote:
Question 40
(19 [15] 12) (10 [6] 3)
(27 [?] 20)

As per yoyo's answer.

Quote:
Question 41

(4 [12] 36) (2 [6) 18)
(5 [?] 45)

Multiply 1st number by 3, subtract from third number, divide by 2. Answer = 15

Quote:
Question 43
(3 [5] 16) (4 [10] 28)
(5 [?] 10)
Answer = 0

Multiply first number by two, subtract from 3rd number then divide by two.

You must always, always use both numbers outside the brackets in these questions.


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PostPosted: Sun Sep 02, 2012 12:37 pm 
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Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6966
Location: East Kent
Q41..multiply L*R answer in brackets is the

square root of that answer

4*36 = 144 sq root of 144 = 12

2*18 = 36 sq root of 36 =6

5*45 = 225 sq root of 225 = 15


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PostPosted: Sun Sep 02, 2012 12:46 pm 
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Joined: Sun Apr 10, 2011 9:04 am
Posts: 87
Extremely thankful Yoyo & Sally Anne

Question 40 is involving three operations
19+12 =31
31-1 =30
30/2 =15


Question 43 is again involving three operations
5x2=10
10-10=0
0/2=0

Question 41 ( Thanks Yoyo) again for the explanation . Really helpful


Do the real tests have questions with three operations , because the tests we have done so far , except this pack are done by two operations.

Regards

Sonia


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PostPosted: Fri Sep 07, 2012 12:41 pm 
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Joined: Wed Apr 25, 2007 12:02 pm
Posts: 149
Location: Birkenhead
Question 41 is interseting as all of the VR guide materials often state that no times or division in these questions will every be higher than the 12 x table but in fact we have 36 x 4, 18 x 2 and 5 x 45
Denise

_________________
Denise J


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PostPosted: Fri Sep 07, 2012 1:04 pm 
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Joined: Mon Jan 30, 2006 4:07 pm
Posts: 2660
Sonia wrote:

Do the real tests have questions with three operations , because the tests we have done so far , except this pack are done by two operations.

Regards

Sonia


Yes, 3 stage operations can and do appear in the real 11 plus as written by GL Assessment.

Walsh include some 3 stage operations.

HopefulDen wrote:
Question 41 is interseting as all of the VR guide materials often state that no times or division in these questions will every be higher than the 12 x table but in fact we have 36 x 4, 18 x 2 and 5 x 45
Denise


Although most of the section will use relatively easy numbers, 36 x 4, 18 x 2 and 5 x 45 can appear towards the end of a section , together with 13 x 13. In addition knowledge of how divide large numbers is required.

Patricia


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PostPosted: Fri Sep 07, 2012 1:10 pm 
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Joined: Mon Aug 22, 2011 8:20 pm
Posts: 1706
Location: Warwickshire
HopefulDen wrote:
Question 41 is interseting as all of the VR guide materials often state that no times or division in these questions will every be higher than the 12 x table but in fact we have 36 x 4, 18 x 2 and 5 x 45
Q41 can equally be done as R-6L (where R is the number to the right of the brackets and L is the one to the left)
36-(4x6)=12
18-(2x6)=6
45-(5x6)=15

No need for tables above 12


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PostPosted: Fri Sep 07, 2012 1:29 pm 
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Joined: Fri Apr 23, 2010 9:08 am
Posts: 91
For question 41,

(4 [12] 36) (2 [6) 18)
(5 [?] 45)


can't you just use the fact that the 2nd number is 3 times the first and the 3rd is 3 times the second?


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PostPosted: Fri Sep 07, 2012 2:15 pm 
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Joined: Tue Oct 04, 2011 8:44 am
Posts: 1390
Location: Reading
All the guidelines say you must use both sides


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