Look at what happens when you take a number, square it and subtract your answer. What kind of number do you get? Can you prove it?
Five children are taking part in a climbing competition with three parts, where their score for each part will be multiplied together. Can you see how the leaderboard will change depending on what happens in the final climb of the competition?
Play this game and see if you can figure out the computer's chosen number.
Here is a chance to play a version of the classic Countdown Game.
What is the smallest number of answers you need to reveal in order to work out the missing headers?
Can you use the clues to complete these 3 by 3 Mathematical Sudokus?
Can you use the clues to complete these 4 by 4 Mathematical Sudokus?
