1. Casio Fx 991es Scientific Calculator

A dead battery can leak, causing damage to and malfunction of the calculator. Never leave a dead battery in the calculator. Do not try using the calculator while the battery is completely dead (fx-991ES PLUS). • The battery that comes with the calculator discharges slightly during shipment and storage. Because of this, it may require. Quick start manual; Casio fx-991EX Quick Start Manual. Also See for fx-991EX. User manual - 44 pages Quick start. Related Manuals for Casio fx-991EX. Calculator Casio fx-991ZA Plus User Manual. Calculator (52 pages) Calculator Casio fx-570ES PLUS User Manual.

E-37

33: (

μ

0

) magnetic constant

34: (

F

0

Casio Fx 991es Scientific Calculator

) magnetic flux quantum

35: (g) standard acceleration of
gravity

36: (G

0

) conductance quantum

37: (Z

0

) characteristic impedance of

vacuum

38: (t) Celsius temperature

39: (G) Newtonian constant of
gravitation

40: (atm) standard atmosphere

The values are based on CODATA recommended values (March 2007).

Metric Conversion

The calculator’s built-in metric conversion commands make it simple to
convert values from one unit to another. You can use the metric conversion
commands in any calculation mode except for BASE-N and TABLE.
To input a metric conversion command into a calculation, press
00050017(CONV) and then input the two-digit number that corresponds to
the command you want.

To convert 5 cm into inches

1

000e 5 00050017(CONV)

000f0011(cm0006in)001b

To convert 100 g into ounces

1

000e 100 00050017(CONV)00110011(g0006oz)001b

To convert –31°C into Fahrenheit

1

000e 31 00050017(CONV)00120017(°C0006°F)001b

The following shows the two-digit numbers for each of the metric conversion
commands.

01: in

0006 cm

02: cm

0006 in

03: ft

0006 m

04: m

0006 ft

05: yd

0006 m

06: m

0006 yd Night at the museum film series.

07: mile

0006 km

08: km

0006 mile

09: n mile

0006 m

10: m

0006 n mile

11: acre

0006 m

2

12: m

2

0006 acre

13: gal (US)

00063 14: 30006 gal (US) 15: gal (UK) 00063 16: 30006 gal (UK)

17: pc

0006 km

18: km

0006 pc

19: km/h

0006 m/s

20: m/s

0006 km/h

21: oz

0006 g

22: g

0006 oz

23: lb

0006 kg

24: kg

0006 lb

Does anyone know how to calculate a Mod b in Casio fx-991ES Calculator. Thanks

10 Answers

This calculator does not have any modulo function. However there is quite simple way how to compute modulo using display mode ab/c (instead of traditional d/c).

How to switch display mode to ab/c:

• Go to settings (Shift + Mode).
• Press arrow down (to view more settings).
• Select ab/c (number 1).

Now do your calculation (in comp mode), like 50 / 3 and you will see 16 2/3, thus, mod is 2. Or try 54 / 7 which is 7 5/7 (mod is 5).If you don't see any fraction then the mod is 0 like 50 / 5 = 10 (mod is 0).

The remainder fraction is shown in reduced form, so 60 / 8 will result in 7 1/2. Remainder is 1/2 which is 4/8 so mod is 4.

EDIT:As @lawal correctly pointed out, this method is a little bit tricky for negative numbers because the sign of the result would be negative.

For example -121 / 26 = -4 17/26, thus, mod is -17 which is +9 in mod 26. Alternatively you can add the modulo base to the computation for negative numbers: -121 / 26 + 26 = 21 9/26 (mod is 9).

EDIT2: As @simpatico pointed out, this method will not work for numbers that are out of calculator's precision. If you want to compute say 200^5 mod 391 then some tricks from algebra are needed. For example, using rule(A * B) mod C = ((A mod C) * B) mod C we can write:

200^5 mod 391 = (200^3 * 200^2) mod 391 = ((200^3 mod 391) * 200^2) mod 391 = 98

As far as I know, that calculator does not offer mod functions.You can however computer it by hand in a fairly straightforward manner.Ex.

(1)50 mod 3

(2)50/3 = 16.66666667

(3)16.66666667 - 16 = 0.66666667

(4)0.66666667 * 3 = 2

Therefore 50 mod 3 = 2

Things to Note:On line 3, we got the 'minus 16' by looking at the result from line (2) and ignoring everything after the decimal. The 3 in line (4) is the same 3 from line (1).

Hope that Helped.

Edit As a result of some trials you may get x.99991 which you will then round up to the number x+1.

There is a switch a^b/c

If you want to calculate

then enter 491 press a^b/c then enter 12. Then you will get 40, 11, 12. Here the middle one will be the answer that is 11.

Similarly if you want to calculate 41 mod 12 then find 41 a^b/c 12. You will get 3, 5, 12 and the answer is 5 (the middle one). The mod is always the middle value.

You can calculate A mod B (for positive numbers) using this:

Pol( -Rec( ¹/_2π^r , 2π^r × ^A/_B ) , Y ) ( π^r - Y ) B

Then press [CALC], and enter your values for A and B, and any value for Y.

/ indicates using the fraction key, and ^r means radians ( [SHIFT] [Ans] [2] )

You need 10 ÷R 3 = 1This will display both the reminder and the quoitent

÷R

It all falls back to the definition of modulus: It is the remainder, for example, 7 mod 3 = 1.This because 7 = 3(2) + 1, in which 1 is the remainder.

To do this process on a simple calculator do the following:Take the dividend (7) and divide by the divisor (3), note the answer and discard all the decimals -> example 7/3 = 2.3333333, only worry about the 2. Now multiply this number by the divisor (3) and subtract the resulting number from the original dividend.

so 2*3 = 6, and 7 - 6 = 1, thus 1 is 7mod3

Here's how I usually do it. For example, to calculate 1717 mod 2:

• Take 1717 / 2. The answer is 858.5
• Now take 858 and multiply it by the mod (2) to get 1716
• Finally, subtract the original number (1717) minus the number you got from the previous step (1716) -- 1717-1716=1.

So 1717 mod 2 is 1.

To sum this up all you have to do is multiply the numbers before the decimal point with the mod then subtract it from the original number.

type normal division first and then type shift + S->d

Calculate x/y (your actual numbers here), and press a b/c key, which is 3rd one below Shift key.

protected by maurisNov 11 '14 at 5:24

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