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problem
Stellar Angles
11 to 14
Weekly Problem 30 - 2013
What is the angle $x$ in the star shape shown?
problem
Integral Division
14 to 16
Weekly Problem 45 - 2006
How many values of $n$ are there such that both $n$ and $\frac{n+1}{n-3}$ are integers?
How many values of $n$ are there such that both $n$ and $\frac{n+1}{n-3}$ are integers?
problem
It's Times Again
7 to 14
Which way of flipping over and/or turning this grid will give you the highest total? You'll need to imagine where the numbers will go in this tricky task!
problem
Space Distances
7 to 11
This task focuses on distances travelled by the asteroid Florence. It's an opportunity to work with very large numbers.
problem
Favourite
Turning
5 to 7
Use your mouse to move the red and green parts of this disc. Can you make images which show the turnings described?
problem
Favourite
Missing Middles
5 to 7
Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of three dominoes?
problem
Favourite
Sponge Sections
7 to 11
You have been given three shapes made out of sponge: a sphere, a cylinder and a cone. Your challenge is to find out how to cut them to make different shapes for printing.