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 Post subject: Increase a number
PostPosted: Sun Sep 01, 2019 9:19 am 
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Joined: Wed Jan 10, 2018 6:27 am
Posts: 19
In the seemingly easy question me and my dc disagreed so I’d like to ask for help.

Increase 5.56 by 1/10.

Do we simply add o.1 to 5.56 (my dc’s solution)
Do we find 1/10 of 5.56 and add it to 5.56 (my solution, or am I over complicating things?)


Thanks a lot for help!


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 Post subject: Re: Increase a number
PostPosted: Sun Sep 01, 2019 9:47 am 
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Joined: Thu Nov 27, 2014 4:04 pm
Posts: 1966
I would do it your way.
But if the question is worded like that then I think your ds is justified in answering it his way too.
It's not well worded.


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 Post subject: Re: Increase a number
PostPosted: Sun Sep 01, 2019 10:32 am 
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Joined: Wed Jan 18, 2012 11:41 am
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Location: Essex
It is very poorly worded. If DC of this stage are really not expected to understand 'increase by 10%', then it should read 'by 1/10th / 1/10th of itself, if the setter means, as one suspects they do 'what is 110% of 5.56?'

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 Post subject: Re: Increase a number
PostPosted: Mon Sep 02, 2019 6:02 am 
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Joined: Wed Jan 10, 2018 6:27 am
Posts: 19
It is actually a question from Withington maths papers and they have a similar one come up each year, like 2014, then 2015. These are supposed to be good papers. So on the end, which answer should I go for when telling my dc what to do..? :?


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 Post subject: Re: Increase a number
PostPosted: Mon Sep 02, 2019 7:26 am 
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Joined: Wed Jan 18, 2012 11:41 am
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Location: Essex
Actually, thinking about it, your DC may be right - one interpretation of the aim of the question is to check recognition of the correct placement of a value given as a fraction (i.e. '1 divided by 10') in a number given to two decimal places?

Presumably the school doesn't provide an answer sheet?

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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: Increase a number
PostPosted: Mon Sep 02, 2019 4:58 pm 
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Joined: Wed Jan 10, 2018 6:27 am
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No, no answer sheets :(


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