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# How to calculate 3^97 mod 353 from 100ms casio calculator.???

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The trick with this type of question is to remain within the capacity of the calculator you are using. 3^97 gives an answer that is well over the capacity of most calculators so we need to break the calculation down into smaller chunks that remain within the calculator's capacity.
One way to do this is to calculate (3^20)mod353 and then multiply the answer by itself four times, which takes us to (3^80)mod353. Then calculate (3^17)mod353 and multiply it with the previous answer, taking us to the required (3^97)mod353 = 40. You can check this with the standard Windows scientific calculator.
The reason this works is that we are removing as many multiples of 353 as possible at each stage of the calculation, rather than removing all the 353's right at the end. It also requires us to know that power numbers can be added together.

Posted on May 02, 2013

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3^97mod353

Posted on Dec 25, 2010

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Posted on Jan 02, 2017

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

Posted on Jan 26, 2008

SOURCE: m mod n in Casio fx991MS

there is one button ab/c beneath CALC... if u want to calculate 7 mod 4 then... u should press 7 then ab/c 4 and equal to
1, 3 ,4 which is 4*1=4 and 7-4=3 remainder...

Posted on Jun 29, 2009

1. Press (AC)
2. Hold (Rate) for about 2-3 second
3. Press (Set / TAX+)
4. Input the tax rate
5. Press (Set / TAX+)
6. Hold (Rate) for about 2-3 second again
7. Press (Set / TAX+) again
And Then you can test the rate .

From Thailand

Posted on Oct 19, 2009

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## Related Questions:

### Remainder fractions

Hello.

You would be looking for a function called 'MOD' which returns a remainder. so 7 MOD 6 = "1".

If your calculator does not have the MOD function... then you can do it by 7 divide by 6 = 1.16666... then take the fractional portion 0.16666 and multiple by your divisor, 0.166666 x 6 = "1". So you can easily calculate it.
Hope this helps
Jeff

Nov 04, 2013 | Casio FX82ES Scientific Calculator

### How to calculate mode with caso fx-991ES

MOD simply calculates the remainder that is left over after dividing by the MOD parameter.
For example, 10MOD7 = 3 since you can only divide 7 into 10 once, leaving a remainder of 3.
For larger numbers, eg 389487MOD31 you start by dividing 389487 by 31, which gives 12564.09677 (on the display), however you only want the fractional part so subtract 12564 to give 0.0967741935 . This includes the lower value digits that were previously hidden. Then multiply this result by 31 which gives 2.999999999 on the display. Since the result of a MOD calculation has to be a whole number, the answer needs to be rounded to 3. If the answer doesn't easily round to a whole number, it is likely that you have gone beyond the calculators working capacity.
An alternative method is to take the integer part of the first result (12564) and multiply it by 31 to get 389484, then subtract this from 389487, giving the answer of 3.

Feb 23, 2013 | Casio FX991ES Scientific Calculator

### 11 ^17 mod 12

11^17=505447028499293771
mod(11^17,12)=11
Your calculator is not be able to calculate it. Even a more sophisticated Casio Graphing Calculator that has the modulo function runs into a memory error.

Mar 07, 2012 | Casio FX991MS Scientific Calculator

### How can I find :11^27mod 29 using my CASIO fx-99IES

11^27 = 13,109,994,191,499,930,367,061,460,371 which is 29 digits long.

You can get this result from the Windows calculator (scientific view) by entering 11 and then pressing x^y 27 = . Then use Mod 29 = to get the result, which is 8.

Unfortunately the Casio fx-991ms (as with most other calculators) doesn't have nearly enough digits to cope with this type of calculation. You therefore need to split the calculation down into more manageable chunks, as follows, which works on most calculators:

First calculate 11^3 = 1,331 and work out Mod 29, which is 1,331 - 45×29 = 26.
Then calculate 26^3 = 17,576 and work out Mod 29, which is 17,576 - 606×29 = 2.
Finally calculate 2^3 = 8. Since this is less than 29, it is also the final answer as confirmed above.

This method can be used with any power number that can be factorised into numbers that don't cause the available digits of the display to overflow. In this case 27 = 3×3×3 so each step involves cubing the previous answer.

Jun 13, 2011 | Casio FX991MS Scientific Calculator

### How do I calculate the mod function in my casio fx 100ms model

It seemed there is no Modulo function in fx-100MS. But Mod is just the remainder of a division operator.

So if you have A mod B = C, divide A by B, subract the remaining whole number, and multiply it by B to get C.

Example:

7 mod 4 = 3

In the Calculator:

7 / 4 = 1.75, then 1.75 - 1 = 0.75. Then 0.75 x 4 = 3

May 30, 2011 | Casio FX-300MS Calculator

### A mod B in Casio fx-115MS How to get an m mod n (ie to calculate modulo of a number)

It's a bit convoluted, and it only works for integers, but here's one way. Press MODE 4 to switch to BASE-N (integer) mode. If the screen doesn't read "Dec" then press the x^2 key. Now, to calculate m mod n, calculate m-m/n*n. No shortcuts, no rearranging. That's m minus m divided by n times n. You have to enter both numbers twice, but you will get the modulus.

May 30, 2011 | Casio FX-115MS Plus Calculator

### I need to calcualte 4587 mod 8 how do i do this on the casio fx-115MS? (there's no 'mod' button) Many thanks

The lack of a mod function makes this more than a bit painful. Here's one way:

Press MODE 4 to go into BASE-N (integer) mode. If the display doesn't read "Dec", press the x^2 key. Now calculate 4587-4587/8*8 (press 4 5 8 7 - 4 5 8 7 / 8 * 8 =, where * is the multiply and / is the divide).

You can calculate other mod problems the same way. a mod b is a-a/b*b.

May 11, 2011 | Casio FX-115MS Plus Calculator

### How 2 find mod value in casio fx-991ms

there is one button ab/c beneath CALC... if u want to calculate 7 mod 4 then... u should press 7 then ab/c 4 and equal to

u get 1,3,4 and ans is center number... result=3..

Jan 16, 2011 | Casio FX991MS Scientific Calculator

### How to get mod on it

If you are thinkink of the modulo function, usually shortened to mod(, I am sorry to say it but that function does not exist on the calculator.
However, there is MODE button that one uses to set the operation mode of the calculator.
You have three principal mode setting
COMP: the general computational mode
SD: a statistics mode to calculate Standard Deviations
REG: to perform REGression analyses on statitical data.

Once you have chosen the preferred calculator mode (COMP, SD, or REG) other choices (dependent on the main calculator mode) will be available.

May 03, 2010 | Casio fx-300ES Calculator

### M mod n in Casio fx991MS

there is one button ab/c beneath CALC... if u want to calculate 7 mod 4 then... u should press 7 then ab/c 4 and equal to
1, 3 ,4 which is 4*1=4 and 7-4=3 remainder...

Jun 29, 2009 | Casio FX-115MS Plus Calculator

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