What is the correct answer?

 

If you’ve ever answered “zero” when quickly reading the expression 10 − 10 × 10 + 10, you’re not alone. This seemingly simple calculation hides a very common trap, even for adults. The culprit: the order of operations. Let’s review the basics together, so you don’t make the same mistake again.

This calculation is confusing

Let’s look at the expression:
10 − 10 × 10 + 10 

At first glance, it seems easy. However, many people add or subtract incorrectly, which gives an incorrect result. And if you thought you were getting  0 , you’ve fallen into the trap. The correct answer is…  −80 .

The key: priority rules (PEMDAS or BODMAS)

These acronyms, taught in middle school, serve as a reminder of the order to be followed:

• P  stands for Parentheses
• E  for Exhibitors
• MD  for Multiplication and Division
• AS  stands for Addition and Subtraction