1 out of 3
Collect as many diamonds as you can by drawing three straight lines.
1 out of 3
There are lots of different methods to find out what the shapes are worth - how many can you find?
1 out of 3
Sequences of multiples keep cropping up...
1 out of 3
The number in the square is the mean of the four numbers surrounding it. Can you find the missing numbers?
2 out of 3
Construct two equilateral triangles on a straight line. There are two lengths that look the same - can you prove it?
2 out of 3
Using the digits 1 to 9, the number 4396 can be written as the product of two numbers. Can you find the factors?
2 out of 3
How many winning lines can you make in a three-dimensional version of noughts and crosses?
2 out of 3
Caroline and James pick sets of five numbers. Charlie tries to find three that add together to make a multiple of three. Can they stop him?
2 out of 3
If you can copy a network without lifting your pen off the paper and without drawing any line twice, then it is traversable. Decide which of these diagrams are traversable.
2 out of 3
The clues for this Sudoku are the product of the numbers in adjacent squares.
