wikiHow Calculating Cube Root Calculator Here are the steps to calculate the cube root of a number by hand: 1. Write the number whose cube root you want to find. 2. Starting from the rightmost digit, group the digits in sets of three. If there is a leftover digit, add a zero at the leftmost position. 3. Find the largest cube that is less than or equal to the leftmost group of three digits. This is the first digit of the cube root. 4. Subtract the cube found in step 3 from the leftmost group of three digits. Bring down the next group of three digits to the right of the remainder. This gives a new dividend. 5. Double the part of the current guess found in step 3 and append a zero at the end. This is the divisor. 6. Divide the new dividend (found in step 4) by the new divisor (found in step 5), using long division. The result is the next digit of the cube root. 7. Repeat steps 4-6 until you have found enough digits of the cube root or until the remainder is zero. Here is an example of how to calculate the cube root of 5832: 1. Write the number: 5832 2. Group the digits: 5 832 3. Find the largest cube less than or equal to 5: 1^3 = 1 4. Subtract 1 from 5: 5 - 1 = 4. Bring down the next group: 48 5. Double the current guess (1) and append a zero: 10 6. Divide 484 by 10: 484 ÷ 10 = 48. The next digit of the cube root is 2. 7. The cube root of 5832 is 18. 8. So the cube root of 5832 is 18. Page