Please Do Not Use a Calculator: Math Puzzle Answer

Did you get it right?

This blackboard puzzle asks you to solve 12 + 12 / 3 + 2 without using a calculator. The trick is remembering that division comes before addition.

Please Do Not Use a Calculator: Math Puzzle Answer

The Answer

The correct answer is: The answer is 18..

Here is why

  1. Do the division first: 12 / 3 = 4.
  2. Then calculate 12 + 4 + 2.
  3. 12 + 4 + 2 = 18.

Why people miss it

Many people read straight across and add too early, but division must be handled before addition.

What answer did you get before checking?