By Maya Walker
Updated Aug 30, 2022

The TI‑30X IIS is a versatile scientific calculator that handles everything from basic fractions to complex mixed numbers. Below is a concise, proven method to input and solve fractions accurately on your device.

Simple Fractions

1. Input the Numerator

Type the top number of your fraction. For example, to enter ½, start with the digit “1.”

2. Activate Fraction Mode

Press the A b/c button located on the third row from the top. This tells the calculator to treat the next numbers as a fraction.

3. Enter the Denominator

Now type the bottom number of the fraction. Using ½ again, this would be “2.” The screen will display the fraction 1 / 2.

4. Add Additional Numbers (Optional)

To combine the fraction with a whole number or another operation, press the appropriate operator (e.g., “+”) followed by the value, then hit Enter to see the result.

Mixed Fractions

1. Enter the Whole Number

Type the integer part first. For 1 3/6, input “1.”

2. Input the Fraction

Press A b/c, type the numerator (“3”), press A b/c again, and then type the denominator (“6”). The screen will show 1 3 / 6.

3. Complete the Calculation

As with simple fractions, you can add, subtract, multiply, or divide by pressing the desired operator and value, then Enter to finish.

By following these steps, you’ll consistently get precise fractional results from your TI‑30X IIS, saving time and eliminating guesswork.