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problem
3 out of 3
Clown Hats
14 to 16
3 out of 3
Weekly Problem 51 - 2015
Charlie is making clown hats from a piece of cardboard. What is the maximum number he can make?
problem
2 out of 3
Unusual Polygon
14 to 16
2 out of 3
What is the perimeter of this unusually shaped polygon...
problem
1 out of 3
Walking, Running, Cycling
11 to 14
1 out of 3
Weekly Problem 44 - 2006
How long does it take an athelete to walk, cycle and run three miles if this is 10 minutes slower than cycling the whole distance?
problem
1 out of 3
Favourite
Your Number Is...
7 to 14
1 out of 3
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
problem
1 out of 3
Favourite
Picturing Square Numbers
11 to 14
1 out of 3
Square numbers can be represented as the sum of consecutive odd numbers. What is the sum of 1 + 3 + ..... + 149 + 151 + 153?
problem
1 out of 3
Favourite
Poly Plug Rectangles
5 to 11
1 out of 3
The computer has made a rectangle and will tell you the number of spots it uses in total. Can you find out where the rectangle is?
problem
1 out of 3
Witch's Hat
11 to 16
1 out of 3
What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?
