Education Technology

# Knowledge Base

## Solution 34831: Entering and Computing Fractions on the TI-84 Plus Family of Graphing Calculators.

### How do I enter and compute fractions on the TI-84 Plus family of graphing calculators?

The TI-84 Plus family of graphing calculators do not have a specific fraction key, but does have a template that allows fractions to be entered.

For example, add 3 2/5 to 3/4 using the steps below:

1) Press [ALPHA] [F1] [1].

2) Enter in [3].
3) Press [Down Arrow].
4) Enter in [4].
5) Press [Right Arrow].
6) Press [+].
7) Press [ALPHA] [F1] [2].
8) Enter in [3].
9) Press [Right Arrow].
10) Enter in [2].
11) Press [Down Arrow].
12) Enter in [5].
13) Press [ENTER].

Two possible answers can be displayed with MATHPRINT turned on and switching from n/d to Un/d in the [Mode] settings.

Changing a decimal into a fraction.

Example: Convert .4 into a fraction.

Press [.] [4] [ALPHA] [F1] [4] [Enter].

Changing a fraction into a decimal.

Example: Convert 15/6 into a decimal.

1) Press [ALPHA] [F1] [1].
2) Enter in [15].
3) Press [Down Arrow].
4) Enter in [6].
5) Press [Right Arrow].
6) Press [ALPHA] [F1] [4] [Enter].