Cant find the constant key to multiply - Casio HR-100TMPlus Calculator

Clear the LCD screen to zero
To multiply numbers, enter the first number by typing the number key pad; press the "X" key and enter the next number; to tabulate those two numbers, press the "=" key

For example, if you want to multiply the two numbers 125 by 425, the expression pressed on the calculator would be 125 X 425 =

From y=k/x one gets y*x=k =constant.
If you multiply the input x by 3 what happens to y?
Let us call x' the new input value, and y' the corresponding output value. Then
x'*y'=k
Substitute 3x for x' and solve for y'
(3x)*y'=k thus y'=1/(3x)=(1/3)*(1/x),
But 1/x is the old output value y. y'=(1/3)*y
Conclusion
When you multiply the input by 3, the output is DIVIDED by 3, so as to maintain the product (input*output) equal to the constant k

Try pressing an operation key twice.
For example to multiply any entry by 15, you would enter 15, press the multiplication key twice. Now to calculate the products of you list of entries by 15, you just enter number in your then press =. c.then the second number and =, etc.

The equivalent of the EE or EXP button on the Casio Fx-115ES is marked as x10^X. It is located at the bottom right of the key pad left of the = key.
To enter the power of 10 in a number written in scientific notation, you press the x10^X button followed by the exponent. If the exponent is negative you press the change sign key first [(-)] , then the one or 2 digits in the exponent.
Example Enter the mass of the proton m_p in kilograms
1.6726217 [x10^X] [(-)]27 [=]
In grams the value above is multiplied by 1000.
or 1.6726217 [x10^X] [(-)]24 [=]

Since the calculator has the physical constants (the FX-991ES definititely has them)

1. Display the proton mass in kilograms
2. [SHIFT ][7] to open the constants catalog,
3. type 01 for the proton mass, then press the [x^-1].
4. Divide the result by 1000
5. You should get 5.978638635 x10^23
   

What do you want to multiply it by? As an example, to multiply it by three, press
1 . 6 6 EE 1 0 +/- 2 7 * 3 =

EE is the key just above the 7 key, +/- is the key just to the right of the decimal point key.

How to do constant multiplication or division on the Canon P170-DH calculator

This process actually requires fewer keystrokes than other calculators. Basically, just do the first problem
and then do the next items with just the next number and the EQUAL key. For example,

*** Constant Multiplication ***
2 (multiply key)
10 (= key)
(The answer 20 shows on the screen. Note, the 2 is still stored as a constant without doing anything, just continue)
4 = (shows the answer 8 on the screen)
20 = (shows the answer 40 on the screen)
100 = (shows the answer 200 on the screen)

*** Constant Division ***
10 (divided by key)
2 =
(shows the answer 5 on the screen, the 2 is still stored as a constant without doing anything, just continue)
100 = (shows the answer 50 on the screen)
500 = (shows the answer 250 on the screen)
4 = (shows the answer 2 on the screen)

Hello,

If you have say to multiply 100 numbers by one single multiplier ( you have 100 multiplications to perfom) you use the Constant function abbreviated to K.

This is how you go about it
in a*b , a is called multilpicand, b is the multiplier.
You enter the multiplier (6) then you press twice on the multiplication key. You are ready to repeated the some operation but with a different multiplicand
You enter the first mutiplicand then you press = (or enter) the result is displayed.
Every number you are going to enter will be multiplied by 6
[6][*][*] -------constant multiplication with 6 as multiplier, Then
[5][=/ENTER/EXE] yields 30
[6][=] yields 36
[0.5][=] yields 3.

Be careful!! If you do not enter a new multiplier and just press [=] the calculator uses the last calculated result as the multiplicand. (On certain calculators, the last result is stored in a register called Ans (short for answer.)

What I described for the multiplication is valid for any arithmetic operation. Thus
[6][+][+] is constant addition with 6
[18][/][/] is constant division with 18 as divisor.

Hope it helps

The number immediately following the e key is the power to which the value of e (2.718281828) is raised. Thus, e5 is equal to 148.4131591, the same as (2.718281828^5) If you press the e key without entering a number after it, an error results. Therefore, the only way to read your equation [500e^0.4] is to assume that e is first being raised to the power of 0.4, then multiplied by 500. To enter this on the Casio, press 5 0 0 [shift] [In] . 4
You will get 745.9123488
If the equation is intended to read (500 multiplied by e) then this value raised to the power of 0.4, that doesn't make sense, as e has no number following it.

Your second equation, 6.1e^0.014 would be entered 6 . 1 [shift] [In] . 0 1 4
This returns a value of 6.186006

You omit the 'power of' sign when you enter the equations.

Hope this helps.

How to do constant multiplication or division on the Canon P170-DH calculator

This process actually requires fewer keystrokes than most other calculators. Basically, just do the first problem
and then do the next items with just the next number and the EQUAL key. For example,

*** Constant Multiplication ***
2 (multiply key)
10 (= key)
(The answer 20 shows on the screen. Note, the 2 is still stored as a constant without doing anything, just continue)
4 = (shows the answer 8 on the screen)
20 = (shows the answer 40 on the screen)
100 = (shows the answer 200 on the screen)

*** Constant Division ***
10 (divided by key)
2 =
(shows the answer 5 on the screen, the 2 is still stored as a constant without doing anything, just continue)
100 = (shows the answer 50 on the screen)
500 = (shows the answer 250 on the screen)
4 = (shows the answer 2 on the screen)

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Also note! There is no K visible on the screen to indicate a constant is set.