It is currently Thu Jan 18, 2018 12:20 am

 All times are UTC

 Page 1 of 2 [ 12 posts ] Go to page 1, 2  Next
 Print view Previous topic | Next topic
Author Message
 Post subject: Another maths problem! (three bus services)Posted: Sat Nov 29, 2014 1:41 pm

Joined: Thu Apr 03, 2014 4:47 pm
Posts: 55
Three bus services stop at my bus stop. Service A departs every three minutes, service B every 5 minutes and service C every 8 minutes.

If all three services leave my stop at 10.00am at what time will they next leave my stop together?

How would a child work through this answer quickly? What method would be used?

Last edited by SouthWiltsGrammer on Sat Nov 29, 2014 4:39 pm, edited 1 time in total.

Top

 Post subject: Re: Another maths problem!Posted: Sat Nov 29, 2014 2:19 pm

Joined: Wed Jan 11, 2006 7:10 pm
Posts: 8762
Location: Buckinghamshire
It is the Lowest Common Multiple of all three numbers.

3 x 5 x 8 = 120.

120 minutes is two hours, so the answer is 12:00.

Top

 Post subject: Re: Another maths problem!Posted: Sat Nov 29, 2014 4:42 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3826
To encourage understanding I would choose two small numbers first, e.g. 2 and 3
Your child can then count in 2s and 3s to get to 6.
Do this a couple of times and then do the same with 3 nos, e.g. 2, 3 and 4.
That way DC isn't merely applying a rule to one situation, s/he is building up skills for other problems.

Top

 Post subject: Re: Another maths problem!Posted: Sat Nov 29, 2014 5:56 pm

Joined: Thu Apr 03, 2014 4:47 pm
Posts: 55
I don't see how the poster that helped me above Sally-Anne would have known to do that I wish I was better at Maths, I have mild dyslexia which I think affects me working out maths easily. It isn't making it very easy to help my DD. She does have a tutor but I like to help at home too.

Top

 Post subject: Re: Another maths problem!Posted: Sat Nov 29, 2014 7:59 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3826
Post on here and ask for ways to support your DD best. Lots of us will help.

Top

 Post subject: Re: Another maths problem!Posted: Sat Nov 29, 2014 8:11 pm

Joined: Thu Apr 03, 2014 4:47 pm
Posts: 55
Thank you Moved I appreciate that very much.

Top

 Post subject: Re: Another maths problem!Posted: Sun Nov 30, 2014 9:01 am

Joined: Sat Aug 10, 2013 11:46 am
Posts: 216
To help the child visualise the problem you could try this:

Cut a piece of graph paper into strips.
On one strip colour in every other square.
On the next strip colour in every third square.
If you then line up two of the squares you can then see how many squares before they line up again.

You could then try it with three strips of 2, 3 and 5.

Get the child to look at what happens with say 6 and 9.

Top

 Post subject: Re: Another maths problem!Posted: Sun Nov 30, 2014 11:58 am

Joined: Wed Sep 17, 2014 7:07 pm
Posts: 109
moved wrote:
To encourage understanding I would choose two small numbers first, e.g. 2 and 3
Your child can then count in 2s and 3s to get to 6.
Do this a couple of times and then do the same with 3 nos, e.g. 2, 3 and 4.
You are singing my song, good to see that someone else thinks with the same perceptive insight. Certainly, I wouldn't "faff around" with strips of paper.

Top

 Post subject: Re: Another maths problem!Posted: Sun Nov 30, 2014 1:16 pm

Joined: Sat Aug 10, 2013 11:46 am
Posts: 216
It depends on what suits the child. Some don't get on with numbers as much as they like playing with patterns. One of the good things about using coloured squares is you can then see the patterns. You can also ask what would happen if they did not line up at the beginning. You could just tick squares on a graph sheet if you did not want to cut out. Maths should be about playing and exploring patterns and any way you can get a child to do that the better.

Top

 Post subject: Re: Another maths problem!Posted: Sun Nov 30, 2014 1:54 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3826
I love the strips idea. Out with the Cuisenaire Rods again.

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 2 [ 12 posts ] Go to page 1, 2  Next

 All times are UTC

#### Who is online

Users browsing this forum: No registered users and 2 guests

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

Search for:
 Jump to:  Select a forum ------------------ FORUM RULES    Forum Rules and FAQs 11 PLUS SUBJECTS    VERBAL REASONING    MATHS    ENGLISH    NON-VERBAL REASONING    CEM 11 Plus GENERAL    GENERAL 11 PLUS TOPICS    11 PLUS APPEALS    11 PLUS TUTORS    INDEPENDENT SCHOOLS    11 PLUS CDs/SOFTWARE    11 PLUS TIPS    PRIMARY    SEN and the 11 PLUS    EVERYTHING ELSE .... 11 PLUS REGIONS    Berkshire    Bexley and Bromley    Birmingham, Walsall, Wolverhampton and Wrekin    Buckinghamshire    Devon    Dorset    Essex    Essex - Redbridge    Gloucestershire    Hertfordshire (South West)    Hertfordshire (Other and North London)    Kent    Lancashire & Cumbria    Lincolnshire    Medway    Northern Ireland    Surrey (Sutton, Kingston and Wandsworth)    Trafford    Warwickshire    Wiltshire    Wirral    Yorkshire BEYOND 11 PLUS    Beyond 11 Plus - General    GCSEs    6th Form    University