Square numbers

A square number is the product of a whole number times itself. Square numbers are sometimes called perfect squares.

For example, 9 is a square number because 3×3=9. You can say that three squared is nine.

​Modeling square numbers

​You can make a square model of any square number! For example, the models below show the square numbers 9 and 16.

​Square numbers up to 100

​The list below shows all of the square numbers up to 100.

​So, the square numbers up to 100 are 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100!