VR type 28

Advice on 11 Plus VR papers and problems

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Kusum
Posts: 22
Joined: Wed Feb 27, 2008 3:37 pm
Location: Reading

VR type 28

Post by Kusum »

can anyone explain and solve these two sums for me?

6(15)11 9(16)15 4( ? )11

20(13)6 25(15)5 23(? )7

Thanks.
patricia
Posts: 2803
Joined: Mon Jan 30, 2006 5:07 pm

Post by patricia »

Dear Kusum

6(15)11 9(16)15 4( ? )11

11 – 6 = 5 + 10
15 – 9 = 6 + 10
11 – 4 = 7 + 10 = 17

20(13)6 25(15)5 23(? )7

20 + 6 = 26 divided by 2 =13
25 + 5 = 30 divided by 2 = 15
23 + 7 = 30 divided by 2 = 15

Patricia
chad
Posts: 1647
Joined: Tue Dec 13, 2005 1:49 pm
Location: berkshire

Post by chad »

Ohhhh! Patricia....

I had just worked them out...about to post.... you beat me to it.... real shame as I don't often 'get' these (but at least I came up with the same answer as you) :lol:
Kusum
Posts: 22
Joined: Wed Feb 27, 2008 3:37 pm
Location: Reading

Post by Kusum »

Thanks a ton...my son & I feel real silly now. :oops:
chad
Posts: 1647
Joined: Tue Dec 13, 2005 1:49 pm
Location: berkshire

Post by chad »

Don't feel silly..... Patricia is very experienced.... and I went thru it with my son nearly 3 years ago.... it still took me about 10 mins to work it out. :roll:
Practice really does help - as you start to apply different stratagies without thinking.
patricia
Posts: 2803
Joined: Mon Jan 30, 2006 5:07 pm

Post by patricia »

chad wrote: Practice really does help - as you start to apply different stratagies without thinking.
Chad, You sound like me!

Kusum, Chad is so right, my students can now 'see' the rule almost immediately. Practice does make perfect.

Patricia
Amanda123
Posts: 3
Joined: Mon Jul 21, 2008 3:14 pm

type 28

Post by Amanda123 »

Hi Guys - I am new to this , but you mention stratergies when dealing with these equations... what exactly do you mean ?
Mike
Posts: 625
Joined: Thu Jan 12, 2006 4:29 pm

Post by Mike »

Hi Amanda123

This question type has a range of variances that get progressively more difficult.

To work them our quickly and accurately students need to have good mental arithmetic skills. Particularly useful are timestables and the ability to multiply and divide outside the standard 10 x 10 tables.

The easier questions are single functions

+
-
x
divide

Then there are combinations. Some combinations are trickier than others such as multiply, then add a constant.

Children should be taught to identify basic questions first then be confident to attempt more difficult questions.

Generally, if the number in the middle is smaller than the outside numbers you will need to subtract, divide, half, subtract a constant at some point. If the number is higher you will need to add, multiply, double, add a constant

A good range of question variances can be found in a free methods & techniques course in the free download section of the site.

Regards

Mike
Mike Edwards is a co-author of The Tutors product range.
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