Question about Casio FX-115ES Scientific Calculator

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In the default MthIO mode the calculator will always try to show exact or symbolic results. You can convert a single result to decimal by pressing the S--D key. If you want all results to be in decimal, press SHIFT MODE 2 to switch to the LineIO mode.

Posted on Nov 11, 2010

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Posted on Jan 02, 2017

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4/6

6/9

8/12

10/15

etc. Just keep multiplying by the same number on both sides.

6/9

8/12

10/15

etc. Just keep multiplying by the same number on both sides.

Apr 17, 2017 | Office Equipment & Supplies

write as decimal over one as fraction.

multiply top and bottom for number of decimal places by 10^(number of decimal places) to eliminate decimal.

Find the greatest common factor (gcf) for both numerator and denominator and divide both by this number in this case 2.

Simplify result.

30621/50000

Decimal to Fraction Calculator

multiply top and bottom for number of decimal places by 10^(number of decimal places) to eliminate decimal.

Find the greatest common factor (gcf) for both numerator and denominator and divide both by this number in this case 2.

Simplify result.

30621/50000

Decimal to Fraction Calculator

Nov 10, 2016 | Office Equipment & Supplies

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.

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

One can express percentages as fractions. Say you have 60% and you want to change this into a fraction. you can also express this as 60/100 because all percentages are are parts of 100. So to change a fraction into a percent you would just convert the fraction into a decimal by dividing (3/4 = .75). Then to get the percentage you just multiply the decimal by 100 to get the percent. (75x100=75%

May 02, 2011 | Texas Instruments TI-34II Explorer Plus...

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.

Generally, MathIO gives results in fractions or radicals.

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

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**
**3**
** = **
**75**

**4**
**100**
**×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**
**3**
** = **
**1,875**

**16**
**10,000**
**×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**
**1**
** = **
**333**

**3**
**999**
**×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 !

Step 2: Multiply top and bottom by 25:

Answer = 0.75

Example 2: Express 3/16 as a Decimal Step 1: We have to mulitply 16 by

Step 2: Multiply top and bottom by 625:

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

Step 2: Multiply top and bottom by 333:

Answer = 0.333 (accurate to only 3 decimal places !

Sep 22, 2009 | Black & Decker Juicers

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.

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...

Hello,

To convert from decimal to fraction and vice versa pess the [S<->D] key. Alternatively, if one of the whole numbers (integers) has decimal mark (dot) the result will be decimal.

Hope it helps.

To convert from decimal to fraction and vice versa pess the [S<->D] key. Alternatively, if one of the whole numbers (integers) has decimal mark (dot) the result will be decimal.

Hope it helps.

Sep 10, 2009 | Casio FX-115ES Scientific Calculator

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.

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

In the CATALOG there is a >Frac command that can be used with parentheses to multiply fractions.

(1/2)(1/3)>Frac

1/6

(1/2)(1/3)>Frac

1/6

Jun 18, 2008 | Texas Instruments TI-85 Calculator

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