Count On
Explorer
Puzzle of the Day
These puzzles are also printed in Eight days a week, a booklet published by the Association of Teachers of Mathematics.
Draw a triangle. Write one of the numbers from 1 to 6 at each corner and one of the numbers along each side (no repeats). Can you arrange them so each side adds up to the same number?
Answer: eg total of 9 1 6 2 4 3 5