Investigate the different numbers of people and rats there could have been if you know how many legs there are altogether!
This challenge is a game for two players. Choose two of the numbers to multiply or divide, then mark your answer on the number line. Can you get four in a row?
Which set of numbers that add to 100 have the largest product?
A game in which players take it in turns to turn up two cards. If they can draw a triangle which satisfies both properties they win the pair of cards. And a few challenging questions to follow...
The clues for this Sudoku are the product of the numbers in adjacent squares.
Play around with the Fibonacci sequence and discover some surprising results!
How have "Warmsnug" arrived at the prices shown on their windows? Which window has been given an incorrect price?
Polygons drawn on square dotty paper have dots on their perimeter (p) and often internal (i) ones as well. Find a relationship between p, i and the area of the polygons.
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
