We've seen that are two types of numbers that can help us with calculations.
The only factors a prime number has is 1 and itself.
Which of the following numbers are prime?
Write down the next square number after 16.
Write down the next 3 triangular numbers.1,\,3,\,6,\,10,\,15,\,⬚,\,⬚,\,⬚
Identify and describe properties of prime, composite, square and triangular numbers.