What are perfect squares? a rational number that is equal to the square of another rational number. A rational number is a number that can be expressed exactly by a ratio of two integers. Below is an example for list of perfect squares: 3 × 3 =9. Thus: 9 is among the list of perfect squares 2 × 2 = 4. Thus: 4 is also among the list of perfect squares List of perfect squares means those numbers made by squaring a whole number. If the product of 2 equal integers successfully gives a square number, then the 2 equal or similar whole numbers are perfect squares. For instance, let’s say we have 25 which is a perfect square that would be obtained from the product or multiplication of two equal integers or whole numbers such as 5, we can call this whole number a perfect square A little trick that can be used to make the best list of perfect squares.