A really weird sum

If ONE costs £1 and TWO costs £2 and ELEVEN costs £11, would it seem obvious to you that TWELVE costs £12?

And could you show why?

Here’s a handy hint: if you rearrange the letters in this: “TWO PLUS ELEVEN” you can make this “ONE PLUS TWELVE” and both answers are the same.

And here’s Presh Talwalker talking through the whole story:

For those who are counting, this is week 20 of the countUP 

Some useful tips for GCSE English Language

Last week we looked at GCSE Maths and some useful tips to get good marks. Here’s Jake again talking about English Language

For those who are counting, this is week 19 of the countUP

We're starting something different this week

Exciting news: the adventures of Megan, Amy, Jack and all the people mentioned in the professor's video HERE are getting close to a first full draft of a book, but this means things are getting busy and there isn't always time to remember which week of the count up we've reached (but I'll try) so for this final stretch towards the finish line, let's do something different.

Is anyone out there heading towards their GCSE Maths and feeling worried that they might not do very well? Here are some top tips for top marks:

If your first thought is evasion

At the sight of an equation

And you'd like to up your mark

But you're totally in the dark

Then try this neat persuasion

From a YouTuber named Clarke

In the video, Jake mentions Corbettmaths. Find them HERE.

And by the way, it's week 18 this week, but who's counting?

Week 17 of the count up

17

17 is a prime number like 13. Its connection with the number 13 and with cicadas is that cicadas can incubate underground for years, but not a random number of years; either 13 or 17.

Why is this a countUP and not acountDOWN?

Week 16 of the count up

16

Week 16 of the count up and here’s a maths problem given as homework to 9 year olds in Taiwan. Never mind “Mind Your Decisions”, which is where this comes from, this one will blow your mind.

Why is this a countUP and not acountDOWN? 

Week 15 of the count up

15

Week 15 of the count up and here’s another puzzle from Mind Your Decisions. And since this is week 15, here’s a hint. The answer is NOT 15.

 

Why is this a countUP and not acountDOWN?

Week 14 of the count up

14

Week 14 of the count up and here’s something different from a YouTube mathematician called Presh Talwalker whose YouTube channel is called Mind Your Decisions. In this video he shows you a neat way to work out the radius of a heart.

Why is this a countUP and not acountDOWN?