Perfect Squares | Definition, List, Chart and Examples

A perfect square is a whole number that results from multiplying an integer by itself. In other words, it is a number that can be expressed as the product of an integer multiplied by itself. Perfect squares exhibit unique properties and play a significant role in various mathematical concepts.  Perfect squares are closely linked to geometric shapes, particularly squares and rectangles.

What is Perfect Square?

A perfect square is a number that can be written in the form \(n \times n\), where n is an integer. Perfect squares are essential in the context of Pythagorean triples, where the sum of the squares of two shorter sides equals the square of the hypotenuse in a right-angled triangle.

Examples: Common perfect squares include 1, 4, 9, 16, 25, and so on, corresponding to the squares of 1, 2, 3, 4, 5, etc.


The square of a number n is often denoted as \(n^2\).


    • The square of an even number is always even, and the square of an odd number is always odd.

Chart of Perfect Squares

Chart of Perfect Squares:

Perfect Squares Examples

  1. \( 6^2 \) =36: The square of 6 is 36.
  2. \( 9^2 \) =81: The square of 9 is 81.
  3. \( 11^2 \) =121: The square of 11 is 121.
  4. \( 14^2 \) =196: The square of 14 is 196.
  5. \( 16^2 \) =256: The square of 16 is 256.


Certainly! Here’s a regenerated set of frequently asked questions (FAQs) about perfect squares:

Q1: What defines a perfect square?

  • A1: A perfect square is a number derived from multiplying an integer by itself, expressed as \(n \times n\), where n is an integer.

Q2: Can perfect squares be negative?

  • A2: No, perfect squares are non-negative integers. Squaring any real number, positive or negative, results in a non-negative value.

Q3: How do I identify a perfect square?

  • A3: Perfect squares are often recognizable by having whole number square roots. For instance, the square root of 25 is 5, making 25 a perfect square.

Q4: Are all integers perfect squares?

  • A4: No, only numbers that can be written as the square of an integer qualify as perfect squares.

Q5: What role do perfect squares play in mathematics?

  • A5: Perfect squares find applications in various mathematical concepts, contributing to the understanding of numerical patterns and relationships.
Q6: Can perfect squares exist as fractions or decimals?
  • A6: Typically, perfect squares are whole numbers, and they are not considered in fractional or decimal forms.

Q7: How are perfect squares applied in the real world?

  • A7: Perfect squares have practical uses in real-world scenarios, such as determining areas in construction, calculating distances in physics, and mathematical modeling.

Q8: Are all square numbers perfect squares?

  • A8: Yes, by definition, all square numbers are perfect squares, representing the result of multiplying a number by itself.