This arithmetic puzzle is short, but it tests whether you remember the correct order of operations. The expression is 18 + 12 × 0 + 7.
Multiplication must be completed before addition. First calculate 12 × 0, which equals 0. The expression then becomes 18 + 0 + 7.
Answer: 25.
The multiplication-by-zero step is the part that catches many people. It only changes the term 12 × 0 to zero; it does not make everything else disappear.
After that, the remaining addition is straightforward: 18 + 7 = 25.


