8, then cube root will have unit digit as 2. To find the cube root of a number, easily, we can use the prime factorisation method. Cube root of a number gives a value, which results in the original number when multiplied by itself thrice. A cube root goes the other direction:. Notice that the symbol for cube root is the radical sign with a small three (called the index) above and to the left . Cube Root of a number can be obtained by doing the inverse operation of calculating cube. There is a process of extracting the cube root of any number expressed as a decimal fraction. Let us check for 3. Step 1. But this method is applicable only for perfect cubes. In other words, to find the cube root of 8, you want to find the number that when multiplied by itself twice gives you 8. To find square root or cube root of a number is not an easy task. We will follow the same steps as in the above example. To Find out cube root is very difficult and complex matter, but here we are sharing some easy tricks to find out a cube root in a very simple way. The process is similar to long division. Find the cube root of 3375. Let's make up a cubic of this form with one root we know, say #x=2.# #8 + 6p = 2q # We'll skip #p=-1, q=1# because #q^2+p^3# isn't negative. this can drain you of your precious time. Remember the conclusions of the above observations. Express 3375 as a product of prime factors. 2, then cube root will have unit digit as 8. b. Let us discuss through an example: Find the cube root of a number 59319. We see the cube root of a square root of what is often a negative number, so the cube root of a complex number in rectangular form. It is denoted by the symbol ‘ 3 √’. 3375 ends with 5, which is an odd number, so 2 is not a factor of 3375. Let's go with. This is a worse deal when finding square or cube root is only part of a bigger problem, like in Data Interpretation or Compound Interest problems in Quantitative Aptitude. When you’re giving a time-bound exam like CAT, CMAT, CET, NMAT, etc. The cube root of 8, then, is 2, because 2 × 2 × 2 = 8. 3 cubed is 27, so the cube root of 27 is 3 They will be used in the steps of calculating the cube roots. The cube root of any number is denoted with the symbol ∛. Cube Root. Method to calculate cube roots of definite Cube numbers. In general terms, the cube root of a number is identified by a number that multiplied by itself thrice gives you the cube root of that number. You need a few preliminary facts: 1. The cubes of the digits 1 to 9: 1,8,27,64,125,216,343,512,729 2. To check if 3 is a factor of a number, sum the digits of the number and divide the sum by 3.