Question about Casio fx-300ES Calculator

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I am trying to get my answer to display in decimal places when i multiply a question by (eg) 70x0.045 keeps being displayed as a fraction 68/20....but it is fine when multiplying whole numbers (eg) 4x5.... i need the answer in decimals, I have the calculator fixed at 9 dec places

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  • condevse Aug 20, 2008

    Casio fx-300es how to change display to decimal instead of fractional?

  • Anonymous Mar 21, 2014

    how to multiply fractions

  • Anonymous Mar 22, 2014

    calculate

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You should press SHIFT then MODE (setup). Then press 2. Done! If you want to change it back, just do the same again, but press 1.

Posted on Sep 01, 2008

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1 Answer

Convert decimal fraction to binary


None of these solutions answer his question. When converting a fraction or any number with decimal places to Binary, the TI-89 gives "Error: Domain error." For example, entering .6875 [2ND][MATH][BASE][BIN] does not work. I haven't found a way to do it with built in functions. In order to do these types of conversions, I use the following method.

Convert: 0.6875 to Binary
- left of decimal is a 0, so write down a 0, then a decimal point: (0.)
- multiply .6875 x 2 = 1.375 left of decimal is 1, write a 1: (0.1)
- drop the 1 and multiply .375 x 2 = .75 left of decimal is 0. write a 0: (0.10)
- multiply .75 x 2 = 1.5 left of decimal is 1, write a 1: (0.101)

- drop the 1, multiple .5 x 2 = 1. left of decimal is 1, write a 1: (0.1011).
- since there is no more fraction, the final answer is (0.1011). Hope this helps.

Jan 27, 2012 | Texas Instruments TI-89 Calculator

Tip

Sharp ELW516: Changing the default display to decimal


<span><b>Getting Decimal Answers by Disabling WriteView<img src="elw516.gif" /> on the Sharp EL-W516 Calculator<br /><br /></b>The Sharp EL-W516's WriteView display uses multiple lines to display mathematics as it is seen on a page. Fractions are shown as fractions, exponents as exponents, integrals as integrals, and so on. This makes entering calculations easier, and reduces the chance of errors. <br /><br />At the same time, calculation results are displayed as fractions (or with roots or pi) whenever possible. Pressing the CHANGE button repeatedly will change these to decimal answers. <br />If you prefer to always get decimal results you need to <b>disable</b> <b>the WriteView display mode</b>. Doing this will make the calculator display like the Sharp EL-546W when in NORMAL mode. Answers will be given as decimals, but fractions will no longer look like fractions. In general, you will still need to follow the EL-W516 instructions.<br /><b>Disabling WriteView<br /></b><br />Press 2ndF and MATH to enter SET UP. Now press 2 for EDITOR.<br /><br />There are now two options: 0: W-VIEW, and 1: LINE<br /><br />Press 1 for Linear display mode to disable the WriteView display, and to get decimals as your answers.<br /><br />To return to the WriteView display, go through the steps above but press 0 for W-VIEW.<br /><br /><b>NOTE</b>: It is not possible to have decimals as the default answer form when in WriteView mode. <br /></span>

on Mar 04, 2011 | Sharp ELW516 Scientific Calculator

1 Answer

While using Casio fx-300ES , I am unable to get answers in decimals. For eg. 3/10...should give 0.3, but the answer is again displayed as 3/10. any way to solve this issue?


The calculator has two Input/Output modes: MathIO and LineIO.

LineIO
LineIO is the old way of entering numbers in calculators and results are always displayed as decimal numbers. Some calculators have a fraction feature and would convert a fraction to a decimal number and back.

MathIO
In MathIO you enter expressions as you would by hand or as you see them written in textbooks.
In this mode, results are by default displayed as fraction or fractions/ radicals.
Conversion
To convert the fraction/radical to decimals you just press the [SD] key. If you press again you cycle through all the available display formats.
So you can (if you want) use the MathIO to manipulate expressions and convert only the last result to decimal. By the way, fractions and radicals are generally more accurate than their decimal representations.

SetUP
If however seeing fractions and radicals is too painful, just set the LineIO as your default mode. To do so press [SHIFT][MODE] to open (SETUP), then select [2:LineIO]

Feb 17, 2011 | Casio fx-300ES Calculator

1 Answer

I just bought this fx-115es and am entering 5x3.3= and getting an answer of 33/2, althought it is right how do i get it to answer 16.5


Hello,
There are several ways you can extract decimal numbers from this fine calculator.

In MathIO Mode

1. Once a fraction or radical is displayed press [S<=>D] button to convert it to decimal. Pressing it again restores the fraction or radical display.
2. Instead of pressing the [=] key to obtain a result, press [SHIFT][=]. The result will be displayed as a decimal number.

In LineIO
If you do not care for exact calculations with radicals and fractions, just change the default mode from MathIO to LineIO. To do so
press [SHIFT]{MODE][2:LineIO]. In this input/output mode all results are decimal.
Please be informed that with this mode you will not be able to access the formula templates that allow you to enter fraction as you see them in textbooks (the natural display format). You lose other neat functionalities also.

As a suggestion, if you like the natural display for input keep it as default, and press [SHIFT][=] to display decimal results or [S<=>D] to convert display to decimal format.

Hope it helps.

Nov 16, 2009 | Casio FX-115ES Scientific Calculator

1 Answer

How do i display a fraction?


Hello,
Press [SHIFT][MODE][1:MathIO].
When in MathIO, you can obtain decimal results if you press [SHIFT][=] instead of just [=] to calculate.
Also, you can use the [S<=>D] key to toggle from one display format to the other ( Fraction <-> Decimals) or (Radicals<->Decimals).

Hope it helps.

Nov 14, 2009 | Casio FX-115ES Scientific Calculator

1 Answer

Casio fx-300ES Default answer readout?


Hello,

Generally, MathIO gives results in fractions or radicals. But sometimes it does not. I tried multiplying or dividing fractions or radicals by integer numbers, and once in while I got a decimal result and was unable to cast it into a fraction or a radical. I was not able to find the pattern.
In lineIO you only get decimal results.
What can one tell you that you cannot determine for yourself? If you appreciate the functionalities of the MathIO, it seems like an insignificant price to pay to press ONE button to switch between displays. It needs to be done ONLY once, for the last result one wants to record.
Your calculator, Your rules. But sometimes one cannot eat the cake and have it too.

Oct 20, 2009 | Casio fx-300ES Calculator

1 Answer

Convert 4 2/9 to a decimal


Step 1: Find a number you can multiply by the bottom of the fraction to make it 10, or 100, or 1000, or any 1 followed by 0s. Step 2: Multiply both top and bottom by that number. Step 3. Then write down just the top number, putting the decimal place in the correct spot (one space from the right for every zero in the bottom number) Example 1: Express 3/4 as a Decimal Step 1: We can mulitply 4 by 25 to become 100
Step 2: Multiply top and bottom by 25:
×25 left-up-over-arrow.gif 3 = 75

4 100 left-under-over-arrow.gif ×25 Step 3: Write down 75 with the decimal place 2 spaces from the right (because 100 has 2 zeros);
Answer = 0.75

Example 2: Express 3/16 as a Decimal Step 1: We have to mulitply 16 by 625 to become 10,000
Step 2: Multiply top and bottom by 625:
×625 left-up-over-arrow.gif 3 = 1,875

16 10,000 left-under-over-arrow.gif ×625 Step 3: Write down 1875 with the decimal place 4 spaces from the right (because 10,000 has 4 zeros);
Answer = 0.1875

Example 2: Express 1/3 as a Decimal Step 1: There is no way to multiply 3 to become 10 or 100 or any power of 10, but we can calculate an approximate decimal by choosing to multiply by, say, 333
Step 2: Multiply top and bottom by 333:
×333 left-up-over-arrow.gif 1 = 333

3 999 left-under-over-arrow.gif ×333 Step 3: Now, 999 is nearly 1,000, so let us write down 333 with the decimal place 3 spaces from the right (because 1,000 has 3 zeros):
Answer = 0.333 (accurate to only 3 decimal places !

Sep 22, 2009 | Black & Decker Juicers

2 Answers

I need to convert decimals to fractions


Hello,
Press [MATH][1:ToFrac] to convert an aswer to fraction.
If you enter 18.52[ToFrac] [ENTER gives 463/25

[MATH][2:ToDEC] converts a fraction to a decimal number.
Hope it helps.

Sep 22, 2009 | Texas Instruments TI-84 Plus Silver...

2 Answers

Problems with fractions on the Casio fx-115es


Hello,
To convert fractions to decimals or decimals to fractions, you use the [S<->D] key. Each time you press the key the result is displayed in the other format.
Alternatively, If you multiply or divide two integer numbers put a decimal mark at the end of one of the numbers (any one). The result will be displayed in decimal format.

Hope it helps.

Jun 01, 2009 | Casio FX-115ES Scientific Calculator

3 Answers

Any way to make decimal answers the default? (casio fx-83ES)


you want a line output

Shift > Mode > 2:LineIO or on the graphics one its sometimes 10:LineO etc.

look for something with line in it

Steve :P

May 14, 2009 | Casio FX-115ES Scientific Calculator

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