Math with Bad DrawingsCartoon Archive

Opposites

April 21, 2017

A friend explains additive and multiplicative inverses, then applies the same logic to 'dog.'

Use this cartoon

Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.

Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-04-21-opposites/ (CC BY-NC 4.0)
Transcript

A: "What's the opposite of 5?"

B: "Either −5 or 1/5. Depends what kind of opposite you mean."

A: "I see. And what's the opposite of 'dog'?"

B: "Well... I guess it's either a cat or a hairless abstraction."

Topics
Number & Arithmetic › Negative NumbersNumber & Arithmetic › FractionsAlgebra › Properties of OperationsNumber & Arithmetic › Reciprocals
Level
Middle SchoolHigh School
Themes
AnimalsLanguage & Wordplay