Question 1

Which is better, Texas Instruments TI-36X Pro or Casio fx-991EX ClassWiz?

Accepted Answer

Based on our testing, the Texas Instruments TI-36X Pro scores higher overall at 9.2/10. The Texas Instruments TI-36X Pro scored 9.2/10 and the Casio fx-991EX ClassWiz scored 8.4/10 in our Best Scientific Calculators 2026 evaluation.

Question 2

Is the Texas Instruments TI-36X Pro worth it over the Casio fx-991EX ClassWiz?

Accepted Answer

The Texas Instruments TI-36X Pro scores 9.2/10 while the Casio fx-991EX ClassWiz scores 8.4/10. The Texas Instruments TI-36X Pro is our "Best Overall" pick in the Best Scientific Calculators 2026 category.

Texas Instruments TI-36X Pro vs Casio fx-991EX ClassWiz: Which to Buy?