1. Power on the calculator by pressing the yellow button on the upper right side of the calculator, directly below the screen and above the arrow keys. 2. Look at the math problem
http://www.ehow.com/how_5427124_dofractionstica...

The fraction function of a TI83 Plus calculator is number one under the math button.
http://wiki.answers.com/Q/Where_is_the_fraction_ke...

Hello, Ther e is no dedicated key to do that but ther is a command ToFrac noted as >Frac. To access it use [MATH[1:>Frac]. Two ways of using the command. 1. You want to reduce
http://www.fixya.com/support/t3150662fraction_ti_...

The button that looks like a sideway L.
http://answers.yahoo.com/question/index?qid=201012...
