A square number is a number multiplied by itself. The square numbers up to 100 are 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100. A cube number is a number multiplied by itself 3 times. The cube numbers up to 100 are 1, 8, 27, and 64. Cube numbers can be depicted as three-dimensional cubes.