Things to keep in mind when using your graphing calculator with fractions:
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MathPrint Mode: The MathPrint Mode has templates to help you enter fractions quickly. Press ALPHA and F1. Make a choice and use arrow keys to navigate.
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Choosing #1 will place a template on the screen for entering a fraction.
If you need to convert your decimal answer to a fraction, choose the MATH key and #1►Frac. The screen will show Ans►Frac. Hit Enter. (Note: The fraction answer will always appear in fraction or improper form. It will not be converted to a mixed number.)
In MathPrint, you may also enter fractions as shown in #1. Choosing #4 from the F1 menu, you can also change between fractions and decimals.
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Beware!! In the examples on the left, the use of parentheses was not needed when adding, but WAS needed when subtracting.
If the parentheses was not used in the subtraction problem, only the 2 would have been subtracted (by order of operations) and the wrong answer would have resulted.
The parentheses are entered automatically by the calculator AFTER you have entered the mixed numbers. Notice that it leaves the answers in fraction form.
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Classic Mode: If you have a tendency to "forget" your parentheses when dealing with mixed numbers, you should consider changing all mixed numbers to improper fractions. This will avoid the need to worry about the parentheses.
For testing purposes, the value 4 was stored in x using ns STO► key. Notice the different answers!!! The calculator only recognizes division between the character immediately before and after the division symbol. Parentheses were needed for this problem (the second answer (.1) is correct.)
The same problem as seen above will occur with MathPrint if you enter 2/5x. To avoid such problems, use the F1 template to enter the fraction. When using the template, the denominator will stay in place and avoid the problem.