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Prime Number Questions
http://www2.elevenplusexams.co.uk/forum/11plus/viewtopic.php?f=2&t=58014
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Author:  RedDevil66 [ Mon May 20, 2019 7:31 am ]
Post subject:  Prime Number Questions

Hi Folks
Any good sites/worksheets for calculating and practising the type of questions. e.g

Which three prime numbers multiply together to make 154?

Author:  Choccy74 [ Mon May 20, 2019 11:20 am ]
Post subject:  Re: Prime Number Questions

2, 7 and 11

Author:  solimum [ Mon May 20, 2019 4:22 pm ]
Post subject:  Re: Prime Number Questions

Googled "Prime factorisation worksheet" and got this:

https://www.easyteacherworksheets.com/m ... ctors.html

Lots of understanding about odd/even numbers, knowing the tricks to see what numbers are divisible by 3 / 5 etc is really needed, and then lots of practice at dividing by 2/3/5/7 - there are no short cuts

Author:  RedDevil66 [ Tue May 21, 2019 7:11 am ]
Post subject:  Re: Prime Number Questions

solimum wrote:
Googled "Prime factorisation worksheet" and got this:

https://www.easyteacherworksheets.com/m ... ctors.html

Lots of understanding about odd/even numbers, knowing the tricks to see what numbers are divisible by 3 / 5 etc is really needed, and then lots of practice at dividing by 2/3/5/7 - there are no short cuts


Thanks a lot. Very helpful :D

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