The TI89 scientific graphing calculator, manufactured by Texas Instruments, provides users with the ease of calculating mathematical equations of all levels with a few pushes of a button. However, learning all the different functions and keys on the TI89 can be overwhelming and it can make entering simple equations seem like rocket science. Knowing what function to push, converting fractions to decimals can take only a few seconds.
Things You'll Need
 TI89 calculator

Press the "Function" key on your Ti89 Calculator located on the topleft corner of your device.

Enter the fraction within the first parenthesis. For example, if you are trying to convert 1/4 into decimals, you would enter: exact(1/4). Remember to close your parentheses at the end of the formula.

Press the "Enter" key on your calculator to finish the conversion in decimals. If you entered "exact(1/4)," your answer should come out with .25.
References
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