1 out of 3
Sequences of multiples keep cropping up...
1 out of 3
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.
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
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
The clues for this Sudoku are the product of the numbers in adjacent squares.
2 out of 3
Mr McGregor has a magic potting shed. Overnight, the number of plants in it doubles. He'd like to put the same number of plants in each of three gardens, planting one garden each day. Can he do it?
2 out of 3
It would be nice to have a strategy for disentangling any tangled ropes...
2 out of 3
What's the largest volume of box you can make from a square of paper?
2 out of 3
Can you do a little mathematical detective work to figure out which number has been wiped out?
2 out of 3
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.
