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 Post subject: tiles problemPosted: Tue Mar 11, 2014 7:57 pm

Joined: Wed Sep 26, 2012 8:21 am
Posts: 90
This has got me confused. Year 7 question. I might be looking too much into it.
A couple are moving into their new home. They would like to have their bathroom floor tiled. The bathroom is rectangle shaped and has sides 4.6m by 6m. What's the side of the biggest square shaped tile in cms that could be used so that no space is left without tiles? He can't cut the tiles by the way.
Thanks.

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:00 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11953
Turn the side length into centimetres and think about factors ... don't want to give the answer just a hint.

See if you can solve it now.

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:11 pm

Joined: Thu Feb 07, 2013 3:25 pm
Posts: 17

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:20 pm

Joined: Wed Sep 26, 2012 8:21 am
Posts: 90
Ignoring the grout

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:30 pm

Joined: Wed Sep 26, 2012 8:21 am
Posts: 90
5cm?

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:36 pm

Joined: Wed Jan 18, 2012 11:41 am
Posts: 4604
Location: Essex
Think a bit bigger - in terms of factors, look at the shorter side first...

_________________
Outside of a dog, a book is a man's best friend. Inside of a dog it's too dark to read.Groucho Marx

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:42 pm

Joined: Mon Feb 24, 2014 11:24 am
Posts: 22
Which book/paper did you find this question in? Asking out of curiosity. Thnx in advance.

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 8:45 pm

Joined: Wed Sep 26, 2012 8:21 am
Posts: 90
Hcf=20cm?
Don't which book it's from. Dd's homework worksheet.

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 10:55 pm

Joined: Mon Aug 12, 2013 9:13 am
Posts: 452
Convert to cms
4.6m = 460cm and
6m = 600cm.

Multiply to get 460600.

Then calculate HCF of 460600 which is 20cm

It is very standard Year 7 homework and I guess not relevant for 11+

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 Post subject: Re: tiles problemPosted: Tue Mar 11, 2014 11:00 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11953
Why are you multiplying the dimensions? It is not necessary ... just find HCF of the two sides.

You cannot find a HCF of one number!

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