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problem

Favourite

Maze 100

7 to 11

Can you go through this maze so that the numbers you pass add to exactly 100?

problem

Neighbourly Addition

7 to 14

I added together some of my neighbours' house numbers. Can you explain the patterns I noticed?

problem

Favourite

One Big Triangle

5 to 7

Make one big triangle so the numbers that touch on the small triangles add to 10.

problem

Four in a Row

11 to 14

Where should black play in this game of four-in-a-row to be certain of winning on her next move?

problem

Bisector Intersection

11 to 16

Weekly Problem 14 - 2007
In the triangle PQR, the angle QPR=40degrees and the internal bisectors of the angles at Q and R meet at S, as shown. What is the size of angle QSR?

problem

Old Order

11 to 14

Who is the youngest in this family?

problem

Silver Line

11 to 14

Weekly Problem 40 - 2008
A class raises money for charity by placing 10p pieces edge to edge in a 'silver line'. If the line was 25m long, how much money did they make?