Here’s a short math challenge that looks simple but sometimes leads to unexpected answers: 240 − 20 × 0 + 6 = ?
The correct answer is 246
Use the standard order of operations. Multiplication comes before addition and subtraction, so start by calculating 20 × 0 = 0.
Now substitute that result back into the original expression: 240 − 0 + 6. Subtracting zero does not change 240; adding six gives 246.
Why does the multiplication by zero matter?
The presence of zero can confuse some readers. Multiplication by zero makes only the multiplied term equal zero. It doesn’t make the entire mathematical expression zero. Likewise, subtracting 20 before multiplying by zero is not valid under the normal order of operations.
How to avoid the common mistake
Whenever you see a mixture of multiplication, division, addition, and subtraction, do multiplication and division first. Then work from left to right to finish the addition and subtraction.
Did you get 246 before reading the explanation? Share the question with someone who enjoys a quick mental-math puzzle.
