Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
Do you know a quick way to check if a number is a multiple of two? How about three, four or six?
A game in which players take it in turns to choose a number. Can you block your opponent?
Who said that adding, subtracting, multiplying and dividing couldn't be fun?
Can you explain the strategy for winning this game with any target?
There is nothing half so much worth doing as simply messing about in boats...
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?
Four friends must cross a bridge. How can they all cross it in just 17 minutes?
A collection of short Stage 3 and 4 problems on Thinking Strategically.
Collect as many diamonds as you can by drawing three straight lines.
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 square.
The clues for this Sudoku are the product of the numbers in adjacent squares.
Can you do a little mathematical detective work to figure out which number has been wiped out?
Here's a neat trick you can do with an 11 by 11 square...
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?
Can you create a Latin Square from multiples of a six digit number?