No Calculator Math Puzzle: Answer

Did you get it right?

This blackboard puzzle asks you to solve 7 + 7 x 3 – 6 without using a calculator. The trick is to follow the correct order of operations.

The Answer

The correct answer is: The answer is 22..

Here is why

  • Do multiplication first: 7 x 3 = 21.
  • Then calculate 7 + 21 – 6.
  • 7 + 21 = 28, and 28 – 6 = 22.

Why people miss it

Many people read from left to right and do 7 + 7 first, but multiplication must come before addition and subtraction.

What answer did you get before checking?