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Weekly Problem 8 - 2016
Can you work out the size of the angles in a quadrilateral?

Peter wrote a list of all the numbers that can be formed by changing one digit of the number 200. How many of Peter's numbers are prime?

You may have seen magic squares before, but can you work out the missing numbers on this magic star?

Boris' bicycle has a smaller back wheel than front wheel. Can you work out how many revolutions the front wheel made if the back wheel did 120,000?

Weekly Problem 51 - 2016
Pegs numbered 1 to 50 are placed in a row. Alternate pegs are knocked down, and this process is repeated. What is the number of the last peg to be knocked down?

If you know how many books each boy, girl and teddy bear borrowed from the library, can you work out the number of girls?

Weekly Problem 26 - 2017
The angles in the triangle are shown in the diagram in terms of x and y. If x and y are positive integers, what is the value of x+y?

Minnie trained more for the London Marathon this year, so her speed increased. By what percentage did her time decrease?

Andrew walks along a flat path, then up and down a hill, then back along the path. Is it possible to work out how far he has walked?