Did you get it right?
This brain teaser asks you to solve 40 + 40 – 20 x 0 + 5 + 5 without using a calculator.
The Answer
The correct answer is: 90.
Here is why
- Multiplication comes first: 20 x 0 = 0.
- The expression becomes 40 + 40 – 0 + 5 + 5.
- Add it together: 40 + 40 + 5 + 5 = 90.
Why people miss it
The common mistake is doing the problem strictly from left to right and forgetting that multiplication comes before addition and subtraction.
What answer did you get before checking?