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# What is a cubed number in math?

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A cubed number in math is one that has been multiplied by itself three times. They are called cubed numbers because the height, width and depth of a cube are all the same. The cubes of whole numbers, or counting numbers, including zero, are called perfect cubes.

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Cubed numbers are expressed with a little three at the top right of the number. When dividing instead of multiplying, the number is called a cube root. For example, while three cubed equals nine, the cube root of nine is three. Cube roots are expressed by using a little three on top of the radical symbol, the symbol used for square roots.

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