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How do I set a casio ms 80s to recognize the percent sign function. I believe the percent button says set/%. What I would like to do is enter a number, subtract percent and get my answer minus the percent. Can I do this with this calculator? Or do I have to multiply get my answer and then subtract to arrive at my percent?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: HELP WITH SIMPLE ADDING, SUBRACTING AND MULTIPLYING

I love that old, little calculator, the TI-1795+ (not the new one, SV).
Does anyone know where to get any more of these. I'd buy a few,
but they are probably out of production. I've had my three for years
and years and years. They still work fine.

Posted on Jan 02, 2009

  • 1 Answer

SOURCE: CASIO ms-7TV

To change the task number you must press and hold % (rate set) for 3 to 5 seconds, should appear tax XX %, now type your tax number and press % again and AC. To test type "100" press TAX + and the result should be 110, if your tax rate is 10% for example.

Posted on Aug 13, 2010

  • 1 Answer

SOURCE: Need to change tax rate



1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]

Posted on Dec 09, 2010

  • 7993 Answers

SOURCE: We are trying to add, subtract, multiply, and

This post is rather exhaustive as regards the matrix capabilities of the calculator. So if the post recalls things you already know, please skip them. Matrix multiplication is at the end. As to division of matrices, I do not believe that this operation exits.

Let me explain how to create matrices. (If you know how to do it, skip to the operations on matrices, at the end.)

First you must set Matrix calculation
[MODE][6:Matrix]. Then By entering one of the numbers [1:MatA] or [2:Matb] or [3:MatC] you get to choose the dimensions of the matrix
(mxn]. Once finished entering the matrix you clear the screen.

The operations on matrices are available by pressing [Shift][Matrix]
[1:Dim] to change the dimension of a matrix (in fact redefining the matrix)
[2: D A T A] enter values in a matrix
[3:MatA] access Matrix A
[4:Matb] access Matrix B
[5:MatC] access matrix C
[6:MatAns] access the Answer Matrix (the last matrix calculated)
[7:det] Calculate the determinant of a matrix already defined
[8:Trn] The transpose of a matrix already defined

To add matrices MatA+MatB (MUST have identical dimensions same m and same n, m and n do not have to be the same)
To subtract MatA-MatB. (MUST have identical dimensions, see above)
To multiply MatAxMatB (See below for conditions on dimensions)
To raise a matrix to a power 2 [x2], cube [x3]
To obtain inverse of a SQUARE MatA already defined MatA[x^-1]. The key [x^-1] is the x to the power -1 key. If the determinant of a matrix is zero, the matrix is singular and its inverse does not exit.

Dimensions of matrices involved in operations must match. Here is a short summary

The multiplication of structured mathematical entities (vectors, complex numbers, matrices, etc.) is different from the multiplication of unstructured (scalar) mathematical entities (regular numbers). As you well know matrix multiplication is not commutative> This has to do with the dimensions.

An mXn matrix has m rows and n columns. To perform multiplication of an kXl matrix by an mXn matrix you multiply each element in one row of the first matrix by a specific element in a column of the second matrix. This imposes a condition, namely that the number of columns of the first matrix be equal to the number of rows of the second.
Thus, to be able to multiply a kXl matrix by am mXn matrix, the number of columns of the first (l) must be equal to the number of rows of the second (m).

So MatA(kXl) * MatB(mXn) is possible only if l=m
MatA(kX3) * Mat(3Xn) is possible and meaningful, but
Mat(kX3) * Mat(nX3) may not be possible.

To get back to your calculation, make sure that the number of columns of the first matrix is equal to the number of rows of the second. If this condition is not satisfied, the calculator returns a dimension error. The order of the matrices in the multiplication is, shall we say, vital.

Posted on May 10, 2011

  • 260 Answers

SOURCE: can not reset calculator. Keep getting + sign when press enter

If the TI-84 does not function even though you are sure that the
batteries are fresh, you can try manually resetting it by following steps:

1. Remove all of the AAA batteries from the graphing handheld

2. Press and hold the ON key for ten seconds

3. Replace the batteries

4. Turn on the unit

When you reset your graphing handheld, the contrast sometimes
changes. If the screen is faded or blank, adjust the contrast by
pressing 2nd and releasing up-arrow or down-arrow keys.

Posted on Feb 24, 2013

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Hi there,

Press AC first, then hold down the RATE SET % button for 2 seconds, then input the rate and press RATE SET % button again

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My calculator will not let me add or subtract percentages.


I have a Casino MS-80S and yea, the percentage works different. As example to take 100 and subtract 10%, this is what I do: 100 X 10% - and then I get the answer 90 after I press the minus key. To add the percentage instead, 100 X 10% + will give me an answer of 110, after I press the plus key.

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CASIO ms-7TV


To change the task number you must press and hold % (rate set) for 3 to 5 seconds, should appear tax XX %, now type your tax number and press % again and AC. To test type "100" press TAX + and the result should be 110, if your tax rate is 10% for example.

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Found this on the casio site worked fine on my ms-120TE
1. Press [AC]
2. Hold [SET/%] key for about 2 seconds until set and a 0 is displayed
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]

this is the link:- http://www.casio.com/support/content/AF64A1AC-193D-4650-A9A9-98BB6FE26CFE

Dec 05, 2007 | Casio fx-300ES Calculator

5 Answers

Casio calculator MS-8TV


SETTING YOUR TAX RATE
you hold your set % button down for three seconds until set shows again, then hit tax rate button it shows your tax rate, change your tax rate then hit set your tax rate should be set.



cliff notes:
hold set% button
hit tax+ button
change the desired %
hit set done

Jun 11, 2007 | Casio MS-80TV Scientific Calculator

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