Please Do Not Use a Calculator: Puzzle Answer

Did you get it right?

This arithmetic puzzle asks: 45 + 45 – 20 x 0 + 8 + 8 = ? The trick is remembering that multiplication by zero happens first.

The Answer

The correct answer is: 106.

Here is why

  • 20 x 0 = 0
  • 45 + 45 + 8 + 8 = 106

Why people miss it

Many people subtract 20 too soon. Because 20 is multiplied by zero, it disappears before the addition is finished.

What answer did you get before checking?