A math riddle is:

*Q: Why did the amoeba flunk the math test?
A: Because it multiplied by dividing. *

The joke has been cited in print since at least 2006.

Google Books

*777 Great Clean Jokes*

By Jennifer Hahn

Uhrichsville, OH: Barbour Publishing, Inc.

2006

Pg. ?:

316

Why did the amoeba flunk the math test?

*Because it multiplied by dividing.*

jokes central

@jokescentral

#joke Q. Why did the amoebae flunk the math test?

A. Because it multiplied by dividing!

12:57 AM - 6 Oct 2009

Srini Metta

@MLMLeadsMastery

Why Did Amoeba Flunk The Math Test? Because it Multiplied by dividing

6:16 PM - 8 Jan 2010

Giggle-Bug

@GetTheGiggleBug

Why did the amoeba flunk his maths test? Because it multiplied by dividing. http://www.giggle-bug.co.uk http://bit.ly/bNfTfK

12:13 PM - 19 Feb 2010

27 October 2010,

*Evening News*(Edinburgh, Scotland), “Joke of the day,” pg. 17:

Why did the amoeba fail the arithmetic test?

Because it multiplied by dividing!

Mark Wilson, Portobello

AlphaMeticApp

@AlphaMeticApp

Q: Why did the #amoeba #flunk the #math test?

A: Because it #multiplied by #dividing

#MathJokes #LetsGetWordy http://goo.gl/oX6j6w

11:11 AM - 17 Aug 2014

Reddit—Jokes

Posted by u/LetsGrin October 1, 2014

Why did the amoeba flunk the math test?

Because it multiplied by dividing.

25 July 2016,

*Fraser Coast Chronicle*(Maryborough, Queensland), pg. 12:

Q. Why did the amoebae flunk the math test?

A. Because it multiplied by dividing!

Reddit—Jokes

Posted by u/halfhippo999 May 20, 2019

Why did the amoeba fail math class?

Because it multiplied by dividing