Triangle Puzzles

You need 6 pebbles

 

Puzzle 1

Place them in the circles so that the

total of pebbles on each side of the

triangle is 3, 4 and 5

 

 

 

 

 

 

 

 

 

 

 

Using 6 pebbles try and solve each of these

 

Puzzle 2

 

 

 

 

 

 

 

 

 

 

 

Puzzle 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Now take 10 pebbles and try and solve these;

 

Puzzle 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Puzzle 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Puzzle 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answers to puzzles. Click here

 

Investigation

 

1)    How many puzzles like these could you make if you have 8 stones?

 

2)    Is there any connection between the total of all the numbers at

the end of the arrows and the number of stones used?

 

3)    Can you find a method for solving these puzzles?

 

Notes on Investigation