Friday 17 October 2014

Mrs comer's maths question

At maths club on Wednesday Mrs Comer set us all a challenge, it was: what number has exactly 36 factors? The prize was five house points!! We could use a calculator, but we couldn't look on the internet. We all tried to find the  number but we couldn't yesterday.  I found out that 3330 had 24 factors so I doubled it which gave me 6660 so I worked on it and then it gave me 36 factors.

Willow O'Neill

2 comments:

  1. Willow, I'm impressed that you have persevered with this challenge! Before I can allocate the 5 house-points:
    i) Why were you trying 3330? Then, why did you double it to get 36 factors? Explain your reasoning.
    ii) List each of the factors of 6660.

    You're nearly there ...!

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  2. I picked 3330 because it seemed like a good number to work on so when found all the factors I doubled it to find 6660 so I worked on it and found 36 factors they are
    1 2 3 4 5 6 9 10 12 15 18 20 30 36 37 45 60 74 90 111 148 180 185 222 333 370 444 555 666 740 1110 1332 1665 2220 3330 6660 willow

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