Can you select the missing digit(s) to find the largest multiple?
Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?
A game in which players take it in turns to choose a number. Can you block your opponent?
Gabriel multiplied together some numbers and then erased them. Can you figure out where each number was?
These eleven shapes each stand for a different number. Can you use the multiplication sums to work out what they are?
Who said that adding, subtracting, multiplying and dividing couldn't be fun?
Can you explain the strategy for winning this game with any target?
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.
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?
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?
There is nothing half so much worth doing as simply messing about in boats...
Four friends must cross a bridge. How can they all cross it in just 17 minutes?