Instantly find the cube root of any number. Identify perfect cubes and calculate to high precision.
∛0 = 0
The cube root of a number x is a number y such that y × y × y = x. It is denoted by the symbol:
For example, the cube root of 27 is 3, because 3 × 3 × 3 = 27. Unlike square roots, cube roots can be found for negative numbers. The cube root of -8 is -2.
A "perfect cube" is a number that has a whole number as its cube root.
Yes! Because multiplying a negative number three times results in a negative number (e.g., -2 × -2 × -2 = -8), the cube root of a negative number is simply negative.
It's difficult for large non-perfect cubes. The best method is Trial and Error or Estimation. For example, if you know 4³=64 and 5³=125, the cube root of 100 must be between 4 and 5.
