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# A message from Patrick- 7th May 2020

Good day to you all!

I hope we are having a fine week and that you managed to find time to enjoy the beautiful weather!

Today I am going to repost the Math challenge from yesterday. I have to say I was  a little disappointed with the lack of response and so, if there is not higher participation from today, I will send it over to the year 6s! I’m sure they will give it a good go.

First of all, I will give you some of the triangles from this image

The first 6 triangles are as follows:

There are many, many more to count! This should give you a hint as to how to do it.

Secondly:

I am thinking of a number:

• It is a three digit number
• It is less than the product of 8 and 25 (8×25)
• It is a square number (eg. 2×2=4, 4×4=16, 9×9=81, 15×15=225…)
• The factors of this number are prime numbers themselves (please comment what the definition of a primer number is)
• All three of its digits add up to more than 5

This time I will give you as many guesses as you want and if you are not correct then I shall let you know which rule your answer does not fit and why!

I want a lot more this time year 5! I know it is difficult but “it matters not how strait the gate, how charged with punishments the scroll” (finish the quote)!

Remember to always remain respectful and kind and I looking forward to speaking to you all!

Take care,

Patrick

www.purplemash.com/sch/west-n15

www.westgreen.haringey.sch.uk/free-books-for-you/

www.westgreen.haringey.sch.uk/home-learning/

www.mymaths.co.uk/

www.ttrockstars.com

www.westgreen.haringey.sch.uk/computing/

www.westgreen.haringey.sch.uk/staying-fit-healthy-and-active/

www.westgreen.haringey.sch.uk/year-5-and-6/

Previous blog posts:

www.westgreen.haringey.sch.uk/indigo-class-news/

• Yi Sheng says:

Is it 169 and a prime number is a number that only has two factors.

• Patrick Creane says:

Excellent! Have you had a go on the triangles challenge Yi-Sheng?

• Yi Sheng says:

Is it 13?

• Yi Sheng says:

Are there 13 triangles?

• Patrick Creane says:

No- there are still quite a few more.

I’ll post the full explanation tomorrow morning so try to get it before then!

• weda says:

is 165

• Patrick Creane says:

It’s not 165 Weda- Yi Sheng has put the correct answer above!

For the triangles look at the bit I have added. There are more than 6!

• Davmie says:

Are there 16 triangles?

• Patrick Creane says:

There isn’t! You’re the closest yet though Davmie!

• Sophia says:

Are there 18 triangles?

• Patrick Creane says:

Have a look at my latest post! It explains the whole conundrum.

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