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how does my dd find the lowest common multiple of 144 and 100? she's forgotten

6 replies

skinnycow · 21/09/2005 21:16

basically thats it. She's completely forgotten and its for maths homework

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SlightlyTaintedSaintGeorge · 21/09/2005 21:20

Here

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alux · 21/09/2005 21:23

here too

good website for all subject areas

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alux · 21/09/2005 21:25

{link<a class="break-all" href="http://www.bbc.co.uk/schools/revisewise/sosteacher/maths/32239.shtml\and" rel="nofollow noindex" target="_blank">www.bbc.co.uk/schools/revisewise/sosteacher/maths/32239.shtml\and here too for ks2}

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alux · 21/09/2005 21:26

and here too for ks2

just when you don't preview message do you mess up.

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cadbury · 21/09/2005 21:27

But thats the lowest common denominator, not multipler. The 1st thing sh'ell have to do is multiply the 2. That will be a multiple of both the numbers. Then she can try halving that number to see if that alsoo is a multiple of 144 and 100 (it will have a 00 as the last 2 digits if it is a multiple of 100 and she can see if it is divisible by 144 as well. She can keep halving the number and checking that it can still be divided by those 2 numbers until it can't be any more and that would be the lowest common multiple.

Having written all of that, someone has probably come along and answered it far more susinctly already.