My answers only come up in decimals but i want to get them in fraction form...what do i need to change?

Here is what you do:

1) Press the Mode button.

2) Scroll down the list that appears until you find "Exact/Approx".

3) Change the setting for "Exact/Approx" to Exact.

4) Press enter to save the settings change.

You have three possible settings for "Exact/Approx":

1) Auto - The calculator will try to determine the best format.

2) Exact - The calculator will always give the answer in fraction form.

3) Approximate - The calculator will always give the answer in decimal form.

Posted on Nov 16, 2009

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Posted on Jan 02, 2017

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

Dec 06, 2010 | Texas Instruments TI-89 Calculator

If you want to convert a single value, press Diamond then ENTER.

If you want them all in decimal, press MODE, scroll down to Exact/Approx, and change the setting to suit.

If you want them all in decimal, press MODE, scroll down to Exact/Approx, and change the setting to suit.

Jun 08, 2010 | Texas Instruments TI-89 Calculator

There are two options.

1) Whenever you want the answer in decimal form, place a decimal after at least one of the numbers.

For example: instead of using (1/2) use (1/2.)

2) Press the "Mode" button. Scroll down the list that appears until you find "Exact/Approx". If you set it to "Approximate", then it will always give the answer in decimal form. If you set it to "Exact", it will give the answer in fraction form.

1) Whenever you want the answer in decimal form, place a decimal after at least one of the numbers.

For example: instead of using (1/2) use (1/2.)

2) Press the "Mode" button. Scroll down the list that appears until you find "Exact/Approx". If you set it to "Approximate", then it will always give the answer in decimal form. If you set it to "Exact", it will give the answer in fraction form.

Nov 12, 2009 | Texas Instruments TI-89 Calculator

if you hit the diamond key before enter you will always get your solution as a decimal

Sep 08, 2009 | Texas Instruments TI-89 Calculator

This is what I did. Go to Math/ 9.Algebra/ 5.approx(

Jun 24, 2009 | Texas Instruments TI-89 Calculator

try this, press shift mode, then line 10. It will make it permanent. the answer will always be in decimals. if you are using a casio with ES models.

Jun 14, 2009 | Office Equipment & Supplies

Press Diamond Enter to convert fractions to decimals.

Jun 14, 2008 | Texas Instruments TI-89 Calculator

go to mode and scroll down to exact/approx, exact will give fractions, approximate will give decimal, change it to approximate and press enter twice to save it, that should solve it, let me know of any other questions that you may have

Mar 21, 2008 | Texas Instruments TI-89 Calculator

Press "MODE"

then scroll down to "Exact/Approx"

select "approximate"

this will have your answers in decimal as default

then scroll down to "Exact/Approx"

select "approximate"

this will have your answers in decimal as default

Oct 16, 2007 | Texas Instruments TI-89 Calculator

May 21, 2014 | Texas Instruments TI-89 Calculator

Feb 17, 2014 | Texas Instruments TI-89 Calculator

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