Definition
Cube number
A cube number is made by multiplying the same whole number by itself three times.
Continue from this idea into connected AXIO math.
What it means
Choose a whole number and use it as the length, width, and height of a cube. The number of unit cubes that fill that shape is a cube number.
Remember it
Same factor three times: n × n × n = n³.
Example
64 is a cube number because 4 × 4 × 4 = 64, so 4³ = 64.
Watch for
A number is not a cube number just because it contains a 3; the same whole-number factor must be used three times.
Common mix-up
A square number uses two equal factors; a cube number uses three.
Exact meaning
A cube number is a number of the form n³, where n is a whole number. It can be represented by an n by n by n array of unit cubes.