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How to Put Fraction in Ti-84 Calculator

Reviewed by Calculator Editorial Team

Entering fractions on your TI-84 calculator is straightforward once you know the proper method. This guide will walk you through the process of entering both simple fractions and mixed numbers, as well as using them in calculations.

Basic Fraction Entry

To enter a simple fraction like 3/4 on your TI-84 calculator, follow these steps:

  1. Press the MATH key.
  2. Use the arrow keys to highlight the Frac option (usually the second option in the first row).
  3. Press ENTER to select the fraction template.
  4. Enter the numerator (top number) of your fraction.
  5. Press the / key (located near the right side of the calculator).
  6. Enter the denominator (bottom number) of your fraction.
  7. Press ENTER to complete the fraction.

Tip: The TI-84 will automatically simplify fractions when you press ENTER. For example, entering 4/8 will display as 1/2.

Formula: Numerator / Denominator

Mixed Number Entry

Mixed numbers (like 2 1/2) require a slightly different approach:

  1. Enter the whole number portion first (in this case, 2).
  2. Press the MATH key.
  3. Select the Frac option as before.
  4. Enter the numerator of your fraction.
  5. Press the / key.
  6. Enter the denominator of your fraction.
  7. Press ENTER to complete the mixed number.

Your calculator will display the mixed number properly formatted. For example, 2 1/2 will appear as 2½.

Using Fractions in Calculations

Once you've entered your fractions, you can use them in calculations just like any other number:

  1. Enter your first fraction as described above.
  2. Press the operation key (+, -, ×, or ÷).
  3. Enter your second fraction.
  4. Press ENTER to see the result.

The calculator will perform the operation and display the result as a simplified fraction or mixed number.

Note: For division problems, the TI-84 may display the result as a decimal if the fraction doesn't simplify neatly. You can convert it back to a fraction using the MATH > Frac function.

Troubleshooting

Fraction Doesn't Display Properly

If your fraction isn't displaying correctly:

  • Check that you've pressed the ENTER key after entering the denominator.
  • Ensure you're using the correct / key (not the division symbol).
  • Try clearing your entry with the 2nd > MODE > Clear Entry function.

Calculator Shows Error

If you see an error message when working with fractions:

  • Make sure your denominator isn't zero.
  • Check that you've properly entered both the numerator and denominator.
  • Try simplifying the fraction manually before entering it.

FAQ

Can I enter fractions in scientific notation?
No, the TI-84 doesn't support scientific notation for fractions. You'll need to enter them as standard fractions.
How do I convert a decimal to a fraction?
Use the MATH > Frac function and enter the decimal number. The calculator will convert it to a fraction.
Can I use fractions in statistics functions?
Yes, you can use fractions in all statistical functions on the TI-84. Just enter them as described in this guide.
How do I simplify a fraction?
The TI-84 automatically simplifies fractions when you press ENTER. For manual simplification, use the MATH > Frac function.
Can I use improper fractions?
Yes, improper fractions (where the numerator is larger than the denominator) work the same way as proper fractions.