MHB How to Find the Cube Root of a Number?

  • Thread starter Thread starter NotaMathPerson
  • Start date Start date
  • Tags Tags
    Cube hand Root
AI Thread Summary
To find the cube root of a number without a calculator, a long division-like method can be employed, which is effective for numbers both below and above one million. The user is struggling with extracting the cube root of 12,812,904 specifically. A suggested resource provides a detailed explanation of this method. Utilizing this algorithm can help in calculating cube roots for larger numbers. Mastering this technique allows for manual extraction of cube roots efficiently.
NotaMathPerson
Messages
82
Reaction score
0
Hello!

My book explained how to take cube root of a number withou using calculator. I managed to extract the cube root of number less than a million. But when its higher like this one 12812904. I cannot extract it.

Can you suggest an algorithm on how to go about this one? Thanks!
 
Mathematics news on Phys.org
NotaMathPerson said:
Hello!

My book explained how to take cube root of a number withou using calculator. I managed to extract the cube root of number less than a million. But when its higher like this one 12812904. I cannot extract it.

Can you suggest an algorithm on how to go about this one? Thanks!

Hi NotaMathPerson,

There's a method to find the cube root of a number, similar to long division mentioned at the following webpage. It might be the one you are looking for.

https://xlinux.nist.gov/dads//HTML/cubeRoot.html
 

Thread 'Trigonometry problem of interest'

Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other day I saw a math problem on line, which they said came from a Polish Olympiad, where you compute the length x of the 3rd side which is the same as the radius, so that the sides of length 2,x, and 11 are inscribed on the arc of a semi-circle. The law of cosines applied twice gives the answer for x of exactly 7, but the arithmetic is so complex that the...
View full post »

Thread 'Six Pencil Puzzle'

Is it possible to arrange six pencils such that each one touches the other five? If so, how? This is an adaption of a Martin Gardner puzzle only I changed it from cigarettes to pencils and left out the clues because PF folks don’t need clues. From the book “My Best Mathematical and Logic Puzzles”. Dover, 1994.
View full post »

Similar threads

Finding a cube root of a number without using calculator .
Replies
4
Views
6K
How to Calculate Cube Root Of 24 digit number?
Replies
6
Views
4K
Finding the nth roots of a complex number
Replies
22
Views
440
Insights Fermat's Last Theorem
3
Replies
105
Views
6K
I Ave length of intersection of all lines through a unit cube
Replies
4
Views
2K
Finding Square & Cube Roots by Hand
Replies
3
Views
2K
MHB Computing The Arbitrary-Precision Nth Root Of Positive (X) In PHP
Replies
1
Views
3K
I Is there a list of root-power quantities? Or a rule of thumb?
Replies
14
Views
2K
B It works but why? (Matching experimental data to a random equation)
Replies
3
Views
1K
Why does less dense air rise and more dense air come down?
Replies
18
Views
2K

Hot Threads

Recent Insights

Back
Top