Key rules you probably remember:

**Addition and subtraction** are performed left to right: $10 - 3 + 2 = 9$. - **Multiplication and division** are performed before addition and subtraction: $2 + 3 \times 4 = 14$, not 20. - **Parentheses** override everything: $(2 + 3) \times 4 = 20$. - **Exponents** are performed before multiplicat