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].
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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.
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Changing a decimal into a fraction.
Example: Convert .4 into a fraction.
Press [.] [4] [ALPHA] [F1] [4] [Enter].
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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].
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Please see the TI-84 Plus Family guidebooks for additional information.