# Tag Archive: PEMDAS

## PEMDAS and negative numbers

By standard mathematical convention, $$-1^2=-1$$. At the same time, students are taught to refer to $$-1$$ as a negative number. A friend recently led me to realize that these two conventions are at logical odds with each other, as discussed…

## Trick question memes

From time to time, a mathematical question of some sort will make its rounds on Facebook and other social media platforms. For instance, the one making the rounds most recently in my portion of the blogosphere was: \[5 + 5…