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Can you use the clues to complete these 5 by 5 Mathematical Sudokus?
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How much can you read into a T-shirt?
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Draw some angles inside a rectangle. What do you notice? Can you prove it?
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If it takes four men one day to build a wall, how long does it take 60,000 men to build a similar wall?
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Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
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Identical squares of side one unit contain some circles shaded blue. In which of the four examples is the shaded area greatest?
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My two digit number is special because adding the sum of its digits to the product of its digits gives me my original number. What could my number be?
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It's easy to work out the areas of most squares that we meet, but what if they were tilted?
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Draw some isosceles triangles with an area of $9cm^2$ and a vertex at (20,20). If all the vertices must have whole number coordinates, how many is it possible to draw?
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Can you find triangles on a 9-point circle? Can you work out their angles?
