You may also like

problem icon

Adding in Rows

List any 3 numbers. It is always possible to find a subset of adjacent numbers that add up to a multiple of 3. Can you explain why and prove it?

problem icon

Magic Sums and Products

How to build your own magic squares.

problem icon

No Matter

Weekly Problem 2 - 2013
After performing some operations, what number is your answer always a multiple of?

Partitioning Revisited

Stage: 3 Challenge Level: Challenge Level:1

A possible start to work on the expansion of brackets in algebra.

It enables students to make links with shape and space and with arithmetic.

A useful follow-up to this problem could be Multiplication square and Cubes within Cubes revisited