Fractions are a way to compare the ratio between two numbers and to express parts of a whole. The components of a fraction are the numerator and denominator. Fractions easily convert into decimal form by dividing the numerator by the denominator. The fraction 1/2 converts to .50, for example. Once you learn how to correctly input fractions into a TI84 calculator, it is capable of processing them.

Press the "ON" button.

Insert the numerator of the fraction into the calculator by pressing the appropriate number. For example, to input the fraction 3/4, press "3."

Press the divide button.

Input the denominator of the fraction by pressing the appropriate number. In the 3/4 example, press "4."

Press the "ENTER" key. The output displays the fraction in decimal form. The fraction 3/4 will appear as 0.75.

Use the "MATH" key followed by the >Frac command to change the outputted decimal number back to fraction form.
Tips & Warnings
 Input mixed numeral fractions by first entering the whole number and then the fraction value.