Vedic Maths Cube Root Tricks

Finding cube root in a quick manner can be very important for the fast Calculations in any competitive exam. Let us see how to find the cube root of a number?

The cube root of a number is another number that, when multiplied three times, makes the first number.

Now

Let us find the cube root of 39304 through a shortcut method involving four steps:

STEP 1:

To find the unit place of the cube root always remember the following points:

• If the last digit of a cube root is 8 then the unit digit will be 2.
• If the last digit of a cube root is 2 then the unit digit will be 8.
• If the last digit of a cube root is 3 then the unit digit will be 7.
• If the last digit of a cube root is 7 then the unit digit will be 3.
• If the last digit of a cube root is other than 2, 3, 7 and 8 then put the same number as the unit digit.

Therefore, the unit digit will be 4.

STEP 2:

Now, strike off the last 3 digits of the given number.

39304

STEP 3:

Now, find the nearest cube of the first 2 digit from the left, i.e., 39.

The nearest cube is 27.

STEP 4:

Now, 3 is the cube root of 27.

Therefore, the ten’s place digit will be 3.

So, the answer will be 34.

Practise it: this trick relies on knowing your cubes, so keep your multiplication facts sharp in our free multiplication game.