Using the standard order of operations (PEMDAS), what is the value of 18 - 3 * (4 + 2) + 12 ÷ 4?
Answer and explanation
Correct answer: A. 3, performing parentheses, then multiplication and division, then addition
- Step 1: Parentheses: (4 + 2) = 6. Step 2. Multiplication and division from left to right: 3 6 = 18 and 12 ÷ 4 = 3. Step 3. Expression is now 18 - 18 + 3 = 0 + 3 = 3. Answer: 3, performing parentheses, then multiplication and division, then addition. Why not the others:* Subtracting 18 - 3 first violates PEMDAS.
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