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How to do fractions on a TI-84 Plus

Press ALPHA then Y= to open the FRAC menu, choose n/d, type the top number, press the down arrow and type the bottom number.

By the Calcist team · Updated October 26, 2026 · About a 3-minute read

Enter a fraction

  1. Press ALPHA, then Y=. The FRAC shortcut menu opens.
  2. Choose 1: n/d.
  3. Type the numerator (top number) and press the down arrow.
  4. Type the denominator (bottom number) and press the right arrow to leave the fraction.
  5. Finish your calculation and press ENTER.

Enter a mixed number

  1. Press ALPHA, Y= and choose 2: Un/d.
  2. Type the whole number, press the right arrow, type the numerator, press the down arrow, type the denominator, then press the right arrow.

Change the answer's form

To getKeys
A decimal answer as a fractionMATH, then 1: ►Frac, then ENTER
A fraction answer as a decimalMATH, then 2: ►Dec, then ENTER
Switch between fraction and decimalALPHA, Y=, then 4: ►F◄►D
Switch between improper fraction and mixed numberALPHA, Y=, then 3: ►n/d◄►Un/d

No FRAC menu?

Older TI-84 Plus calculators without the MathPrint operating system don't have fraction templates. Type the fraction with the ÷ key, using brackets around each fraction, for example (1÷2)+(1÷3). Then press MATH, 1: ►Frac, ENTER to see the answer, 5/6, as a fraction. Updating the calculator's OS from Texas Instruments adds the templates.

Check your answer

The fraction calculator shows every step, including the common denominator and simplifying, and decimal to fraction converts any decimal.

Sources: Texas Instruments: Entering fractions and mixed numbers; TI-84 Plus For Dummies: working with fractions.

Every worked example on this page was checked with Calcist's own engine and an independent reference.

Questions people ask

How do you put a fraction in a TI-84 Plus?

Press ALPHA, Y=, choose 1: n/d, type the numerator, press down, type the denominator and press right.

How do you turn a decimal into a fraction on a TI-84?

Press MATH, choose 1: ►Frac and press ENTER. It works on the last answer or on an expression you type before it.

Why doesn't my TI-84 give fractions?

Answers show as decimals unless you convert them. Use MATH 1: ►Frac. If ALPHA Y= doesn't open a FRAC menu, your calculator has an older operating system.

How do I enter a mixed number on a TI-84 Plus CE?

Press ALPHA, Y=, choose 2: Un/d, then fill in the whole number, numerator and denominator, using the arrow keys to move between them.