This quick math puzzle looks easy, but it tests whether you remember the standard order of operations.
The expression is 10 + 10 × 0 + 10.
The correct answer is 20.
Multiplication comes before addition, so you must calculate 10 × 0 first. That equals 0. The expression then becomes 10 + 0 + 10, which equals 20.
So the full calculation is: 10 + (10 × 0) + 10 = 10 + 0 + 10 = 20.
A common mistake is to work from left to right without applying multiplication first. These short puzzles create disagreement because the arithmetic is simple while the order of operations is easy to overlook.
