Question about Texas Instruments TI-30 XIIS Calculator

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What keys due i use to calculate a fraction, where is the fraction key

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To do fractions, just use the normal divide button.
To see the exact answer, hit MODE and scroll down to Exact/Approx and change to EXACT. In this mode, it will give the fraction always unless you press the special (green button with diamond) before pressing ENTER and it will give the approximate decimal value.

Posted on Feb 05, 2008

  • Flea337 Mar 24, 2008

    Sorry about that, I gave instructions for doing fractions with a TI-89 grahping calculator.

    For the TI-30X, the fraction key is in between the LN key and the DATA key. It is labeled as [A b/c]. For most fractions, like 4/3 all you need to do is enter it in by hitting 4, [A b/c], 3 wherever you need to have the fraction. For a mixed number, like 1 and 2/3, hit 1, [A b/c], 2, [A b/c], 3. It will default to giving you the number in its simplest mixed number form. If you really need it in a pure fraction (like 5/3 instead of 1 and 2/3) then when it gives you 1 and 2/3 hit 2nd [A b/c] and it will convert it for you. Occasionally, it will give you the answer in decimal form, which means that it had a numerator or a denominator that was too many digits to display, so it approximated it for you.

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1 Answer

How do you enter mixed fractions?


Look for the key that has the template of a fraction : A solid white rectangle, a fraction bar an an empty rectangle. That key should be between the CALC key and the change sign key (-).
If you press SHIFT followed by the fraction template key the calculator displays the template of a mixed fraction. In the rectangles type in the integer part, the numerator and the denominator. Use the arrow keys to move from one rectangle to the next.

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Is it possible to enter fractions in my new casio fx9750gii. ive tried the shift f-d key but it doesn't want to play


The F-D key converts from fraction to decimal and vice versa. The key to the left of the F-F key, and which is marked a b/c is the one used to enter fractions. The SHIFT F-D sequence toggles between improper fraction and mixed number. The OS of this calculator does not allow the displaying of stacked fractions.

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1 Answer

Can you do any ratio on the cauculator


Most of the time a ratio is nothing but the division of two quantities. If you have a fraction key, enter one term of the ratio as numerator, and the second term as denominator. If you do not have a fraction key just use the division key.
According to the name Fraction Mate, you calculator can do fractions. Enter your ratios as you would fractions.

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1 Answer

On TI-84 plus calculator i know how do do fractions but i dont not know how to change the settings so when i type it in it actually looks like a fraction


I will assume that your calculator is equipped with one of the later Operationg systems. (2.53 MP and later).
To be able to use the Math Print templates you must set the IO display to MATH.
To do so turn calculator ON, press the MODE key to display the configuration pages. Scroll down to reach Page 2. At the top of the page you have Math and Classic. Use left arrow key to highlight MATH and press ENTER to validate.
Afterwards, when you want to type in a fraction or a loagb function, etc. press the ALPHA key. You will see TABS at the bottom of the screen. Activate a TAB by pressing the Fx key that is below it (F1, F2, or F3). You can move from one TAB to the next by pressing the Left/Right navigational keys.

Assuming that you pressed the improper fraction key, you will see a template of a stacked fraction. Enter the numerator in the upper square and the denominator in the lower square. Press the enter key.
In the MODE configuration you can force the display to be mixed fraction or improper fraction. You can also force a decimal representation of fractions (as results of calculations).

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2 Answers

Why does my TI-30Xa calculator keep converting fractions to decimals? I type in a # then click the fraction key (1/x key) and before I can enter the denominator # it immediately says 0.33333333, how can I...


First of all, the "1/x" key isn't the fraction key, it's "1-over-x." Pressing 3 1/x divides 1 by 3, giving you 0.33333333 .

If you want to enter a fraction, use either "a b/c" or "d/c," located just to the left of the 1 key. You can convert between decimal and fraction with "F--D" just below that.

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1 Answer

I have an fx-300es scientific calculator. It doesn't have an ab/c button. Does another button function like an ab/c button?


The calculator has a key marked with two squares on top of one another and with a fraction bar between them. The key is to the left, below the ABS key..
The shifted function of that key is the mixed fraction [a b/c]. I am not convinced you need a specific key to enter a mixed fraction: you can just type in the integer part (whole part) then + then use the fraction key (the one with the two squares.)

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1 Answer

How do i enter a fraction on the calculator


In math IO mode, press the key marked with a two-level fraction symbol (1 solid square in numerator, fraction bar, 1 empty square as denominator.) A fraction template is displayed. Use the up or down key to move cursor to numerator or denominator. Press [=] key when finished.

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1 Answer

How do i do fractions with this calculator? there are so many keys i dont know what to push.


The primary key to enter something that resembles a fraction is the division key, the one above the multiplication key.
However, any division you enter yields a decimal number, unless the result is an integer.

To keep the result of a division as a (reduced) fraction use the [|=>Frac] or [ToFrac] command. It is accessible by the following key sequence
[MATH][1:ToFrac].
Insert it after the fraction, before pressing the [ENTER] key to get the result.

By pressing [MATH][2:ToDec] you convert a fraction in to a decimal number.

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1 Answer

How do you change decimals to fractions on a casio


If you enter an improper fraction or a mixed fraction with the the [a b/c] key it will be displayed as a fraction. This result being displayed you can press the [F-D] key to convert the fraction to decimal. If you do nothing else and you press the [F-D] key again, the original fraction will be restored.

However, it seems that you cannot enter an arbitrary decimal number and convert it to a fraction. The [F-D] key seems to work one way : from a fraction to a decimal number. You will only recover a fraction if the original number was a fraction.

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1 Answer

Fractions


I checked the manual for the EL-501W calculator and I found out that it does not do fraction calculations. However yours may be able to. Look for a key labeled [a b/c] and a [2ndF] key [d/c].

If you have them then you can calculate with fractions.

The way to use the [a b/c] key is as follows
15 [a b/c] 7 [a b/c] 19 [a b/c] should allow you to enter 15 and 7/19.
A mixed fraction can be converted into an improper fraction by pressing [2ndF][d/c]

Jan 08, 2009 | Sharp EL-501WBBL Calculator

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