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To work out the cube root of a number

How do you work out the cube root of a numberusing a casiofx-83es scientific calculator

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I am guessing, but, find the key that has a 3 to the left of the root symbol, looks like a check mark. Push it, then the number you want to take a cube root of, then enter.

Posted on Jan 26, 2009


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How do I find the 4th square root of 16 on a datexx ds-700 scientific calculator??

Roots are called as follows:

square root

cube /cubic root

From 4th on, use the ordinal fifth, sixth, ... n-th

To calculate the fourth root you have two possibilities.

  1. Some calculators have the x-root key marked with an x followed by the radical symbol. See the screen capture on how to find your result.


    Usually the x-root is the SHIFTED function of the general power key that is marked ( [^], [X^y], or [Y^x] ). To use it, you inter the index of the root (the ordinal number). then you press the [SHIFT/2nd/ 2nd] [X^y] sequence and the number whose root you are calculating).

  2. Alternatively: Use the equivalence n-th Root (x)=x^(1/n), meaning that to extract the fourth root of 16, you raise 16 to the power of (1/4)


Sep 19, 2014 | DateXX DS-700 - 2 line LCD Display 224...

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There are several ways to find the cube root of a number on a calculator. On this calculator, we can use the nth root button, by using the yellow shift button with the ^ key. Another way to do this is just to use the ^ key.

For example, the cube root of 8 is performed by the following key sequence: 8, shift, ^, 3.

Another sequence is: 8 ^ (1/3)

Good luck.



Apr 25, 2014 | Casio FX-82MS Scientific Calculator

1 Answer

Casio fx-83es

3.28 squared is 10.7584 .
10.7584 times 40 is 430.336 .
It appears your calculator is correct. I get the same result on multiple calculators, as well as by hand.

Let's work this backwards:
431.8 divided by 40 is 10.795 .
The square root of 10.795 is about 3.28557 .

Feb 01, 2012 | Casio FX83ES Scientific Calculator

1 Answer

How to find cube root

Use the cube-root function, which is the shifted function of the square-root key (third row, second column). For example, to find the cube root of 8, press
SHIFT [cube-root] 8 =

Jul 09, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

How you find the cube root of a complex number (8,60degrees) on the Casio Fx-115ES

You can use the root functions even in COMPLEX Mode, but you cannot feed the root functions a number that is complex.k24674_57.jpg

The case you have given is easy enough to do by hand (see screen capture below.)


May 22, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

How does a cube root sign appear in calculator??

There is no cube root key on the fx-115ES. There is a general root function. It's the shifted function of the x^ key, just below and to the right of the big round key at the top of the keyboard, above the sin key. To find the cube root of 8:

In LineIO mode: press 3 SHIFT [root] 8 =

In MathIO mode: press SHIFT [root] 3 right-arrow 8 =

Dec 09, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

How do you work out a cubed root on a calculator

If you have a dedicated key (3V¤), enter the number and press the relevant key. Result is displayed.
If you do not have a key dedicated to cube root, you can use the xRoot key ( a raised x to the left of a radical sign) if it exists. In this case you press the index of the root (3) before pressing the xRoot key. This is then followed by the radicand (number whose root you are extracting) then =

If you have none of the above keys you may use the universal power key (x To the y, ^, or the yToX key) with an exponent equal to 1/3
You enter the number, you follow that with the power key, open the left parenthesis, enter 1 /3, close the right parenthesis and press =.


Nov 21, 2010 | Casio FX-115ES Scientific Calculator

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How would I use this calculator to find a square root?

Two buttons under the shift key-(top left key) and to the right one is the square root key. Just push it and put the number is not manditory to close the parentesis. You can also hit shift before the square root key to get the cubed root.

Apr 20, 2010 | Casio FX-115ES Scientific Calculator

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Cube root of a number

push 3
then push 2nd
then push the carot symbol ^ some calculators have this as y^x
then enter your number

If that fails use the calculator program in your computer and change its view to scientific. This has cube roots

Mar 25, 2010 | Texas Instruments TI-30 XIIS Calculator

1 Answer

How do i do a number 'to the power of 1/2 or 2/3? cheers Brad

Power 1/2 is the same as square root: You can use the square root key to the left of the square key.
Similarly power 1/3 is the cube root. You use the [SHIFT][Square root] key sequence.
Power 2/3 is the square of the cube root, or the cube root of the square.

More generally, you can use the universal power key, marked with X with a raised white rectangle. It is between X square and log.

Ex: Calculate 15^(2/3)
15 [X with raised rectangle] 2 [/] 3 [)] [=]; the result is 6.082
The last parenthesis closes the left parenthesis introduced by the calculator.
Alternatively you can use the cube root and the x-root selections available under the MATH menu.(selections 4 and 5)

Mar 14, 2010 | Casio FX-115ES Scientific Calculator

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