To solve the expression $12 + 3 \times 8$, we must follow the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

1. Multiplication first:
   $3 \times 8 = 24$

2. Then addition:
   $12 + 24 = 36$

So, the final answer is 36.

Would you like more details or have any questions?

Here are 5 related questions:

1. What is $15 + 2 \times 7$?
2. How do you solve $18 \div 3 + 4 \times 5$?
3. What is the result of $10 + 6 \times 2 - 4$?
4. How does the order of operations affect the expression $7 + 3 \times 5^2$?
5. How would you solve $2 + 3(5 + 4)$?

Tip: Always perform multiplication and division before addition and subtraction when there are no parentheses.