A square number is the result of multiplying a number by itself.. This can also be called a 'number squared'. The symbol for ‘squared’ is ². For example, you would write 3 squared like this ...

From a set of six numbers, use your innovation to identify three whose sum is a perfect square ...

A square number is the result of multiplying a number by itself.. This can also be called a 'number squared'. The symbol for ‘squared’ is ². For example, you would write 3 squared like this ...