The order of operations is a collection of rules that gives the correct sequence of steps in a calculation. BIDMAS is often used as a way to remember the order. When only addition and subtraction are ...

You don’t have to be a math whiz to know that 4 - 2 + 1 equals 3. Yet I was working with several students recently who said it equals 1. And it wasn’t their fault. Nor was it their teacher’s fault.

At first glance, the problem appears easy enough. But while many users on X, formerly Twitter, quickly chimed in with answers, only a small number got it right - because only they remembered to apply ...