Of course, everyone knows that many fractions can be reduced by cancelling:

16/64 = 1/4
(cancel the 6’s)

19/95 = 1/5
(cancel the 9’s)

266/665 = 2/5
(cancel the 6’s)

But all of those are examples of getting the right answer for the wrong reason. Sort of like the third patient in this joke…

The doctor at a mental hospital is testing three of his patients to determine if they are ready to be released. He asks the first guy, “What is 3 × 3?”

“274,” says the first guy.

The doctor asks the second guy, “What is 3 × 3?”

“Tuesday,” replies the second guy.

The doctor turns to the third guy. “Okay, your turn. What is 3 × 3?”

“Nine,” says the third guy proudly.

“Simple,” says the third guy. “I subtracted 274 from Tuesday.”

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The Math Jokes 4 Mathy Folks blog is an online extension to the book Math Jokes 4 Mathy Folks. The blog contains jokes submitted by readers, new jokes discovered by the author, details about speaking appearances and workshops, and other random bits of information that might be interesting to the strange folks who like math jokes.

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