University of Canterbury provides funding as a member of The Conversation NZ. Everyone knows that arithmetic is true: 2 + 2 = 4. But surprisingly, we don’t know why it’s true. By stepping ...

We recently got a note from an anonymous “math lover” who insists the words “math” and “arithmetic” do not mean the same thing, despite the fact that many people use them interchangeably.

The arithmetic mean is the simple average, or the sum of a series of numbers divided by the amount of numbers. What Is the Arithmetic Mean? The arithmetic mean is the simplest and most widely used ...