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We might act like Muppets sometimes, but we’re nowhere near as good at counting as Count von Count. One! Two! Three! Hahaha. And that’s more or less where our worldly wisdom with numbers ends.

(Un)fortunately, we’re not the only ones whose brains sometimes derp out and throw their math skills out of whack! And that’s what the ‘They didn’t do the math’ subreddit is all about. It documents all of the biggest math fails on the net and all of the times people messed up when doing school-level counting. (Just remember not to mix this community up with its counterpart, the ‘They did the math’ subreddit.)

Check out some of the funniest ‘They didn’t do the math posts’ and upvote your fave pics by giving them a big old upvote. Do you have any embarrassing math fails to share with all the other Pandas? Drop us a comment below. Who said that math can’t be fun?!

#3

A Penny A Day For A Year Will Get You Nowhere

A Penny A Day For A Year Will Get You Nowhere

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Skyler Harris
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I know how the guy/girl thought it was 9,125 dollars with the quarter. Because he probably did 25x365 and not 0.25x365

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The subreddit has over 24.3k members and has been active for 6 and a half years at the time of writing. And the community is all about making your inner numbers’ wiz groan and cringe. There’s nothing like feeling like a genius at math when you compare yourself to the worst of the worst, is there?

But suppose that being better than the worst isn’t enough for you. You like a challenge. You enjoy improving yourself. Pushing past your limits. You’re a Panda, after all! Luckily, there are countless (pun not intended) free and paid resources online to help you sharpen your skills with numbers. From big names like Khan Academy to small scale websites and projects that you’ll find hiding in the cracks of the internet, right in-between posts about cats.

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While some peeps have an easier time learning math, I sincerely believe that everyone can reach the genius tier if they put in enough time, effort, and focus. I for one was really awesome at math when I started school (multiplying stuff was my bread and butter). However, I started struggling when they started throwing in letters and weird concepts into my calculations. I’m sure that more than one of you has been there, dear Readers.

But one thing that I learned was how much carving out an hour or two for practicing basic math problems helped me out. That and knowing some amazing math wizards who explain to you the illogical logic behind numbers. TL;DR—practice makes perfect and soon enough you’ll be a Muppet like Count von Count.

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#9

Ah Yes, Calculation

Ah Yes, Calculation

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Csaba Hegedűs
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Well, if he sleeps just three hours less, then it means he can drive for 27 hours per day...

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#11

What A Genius

What A Genius

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Bardhi's Dad
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I'm sure he is not trolling, so it means that the second solution is correct

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#17

Yay! We All Win

Yay! We All Win

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bryguy
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

It's scary when they double down and try to explain how they are right lol

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#19

How Many Trips Back To The Store?

How Many Trips Back To The Store?

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#20

Ah Yes, The 500 People Population Of The U. S.

Ah Yes, The 500 People Population Of The U. S.

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#21

Once A Day For Whole Year

Once A Day For Whole Year

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#24

For The 0.01th Time?

For The 0.01th Time?

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Hans
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

And even the testing math is not true, as positive rates do not simply scale with the number of tests but are dependent on many factors.

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#25

Hmm...

Hmm...

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#26

How Do I Take Advantage Of This Special?

How Do I Take Advantage Of This Special?

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#27

When Did Free Become So Expensive?

When Did Free Become So Expensive?

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#28

Please Explain... Yes...

Please Explain... Yes...

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#29

Only 4% Of The People Wash Their Hands?

Only 4% Of The People Wash Their Hands?

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chi-wei shen
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I still hope the numbers by CDC are wrong. Such a low percentage sounds outright disgusting.

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#30

Communicative Property Is Anger

Communicative Property Is Anger

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#32

Valentine's Day Instant Baby Or That Elusive 4th Trimester Pregnancy

Valentine's Day Instant Baby Or That Elusive 4th Trimester Pregnancy

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bryguy369 avatar
bryguy
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Anyone who puts "lmfao" after every sentence immediately goes down 100 IQ

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#33

Abc Did Not Do The Math

Abc Did Not Do The Math

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Alex Fierro
Community Member
3 years ago (edited) DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I'm guessing you could pick more than one option in the survey? It would make sense if the graph wasn't a pie chart

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#34

Social Distancing

Social Distancing

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#35

Wow! What A Great Deal!.....wait....

Wow! What A Great Deal!.....wait....

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#36

Pemdas

Pemdas

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#38

Shouldn't A Vp At A Mortgage Company Understand How Compounding Interest Works?

Shouldn't A Vp At A Mortgage Company Understand How Compounding Interest Works?

C00LST0RYBRO Report

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Kathryn Baylis
Community Member
3 years ago (edited) DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Motivational posters and motivational books totally turn me off. Mostly because those who hang the posters all over the place, and read way too many of the books, have a tendency to proselytize about them ad nauseum. And I do get nauseous when I smell ‘em comin’.

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Shull GaRett
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Technically even if we take that literally its untrue. On the 2nd its 1% of 101% from the 1th day, 3rd day is 1% of 2nd day so its 102.01% and that decimal part keeps growing. So after 365 days it accumulates up to 3740,93%.... Take that motivational speakers!

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Maya Kuntz
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Okay, so even if this math is right, how do you improve yourself by 1%? What are you measuring?

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Zophra
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Alas, the math skills will not even improve that much.

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Ron Santos
Community Member
2 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I’m more troubled by the incorrect use of “everyday.”

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AnnieLaurie Burke
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I dunno. This VP might be the one to calc your interest payments....

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elfin
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

I will also think about just how one would measure that improvement.

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Spinaap
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

this is actually true ... don't see the issue her, or did I miss something?

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Mike Beck
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

"Percentage" versus "percentage points". For the first, the sequence should be: 100, 101 (100 + 1% of 100), 102.01 (101 + 1% of 101), 103.0201, 104.030201... For the second, it would be 100, 101 (100 + 1% of 100), 102 (101 + 1% of 100), 103, 104... It's the problem with not being clear.

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Monika Soffronow
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Is the hiker contemplating jumping off the mountain to disassociate herself from the text?

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Vorknkx
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Improving by 1% does not mean "+1%", but rather "multiply by 1.01" ;)

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Lili
Community Member
3 years ago (edited) DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Didn't strictly say 1% of what, so one couldn't assume it is accumulative, could be 1% of a specific value. If this is a problem in a math exam, then it is disputable.

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Harold Summer
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

Actually, it's much better. 3,778% The formula for compound interest is: A = P (1 + r/n)^ (nt) where A = final Amount, P= initial investment =$1, r= interest rate =1% = 0.01, n = number of times compounded per unit time = 1 per day, t= number of time units = 365 days. So filling in the details 1(1+.01/1)^1*365 = (1+.01)^365 = 1.01^365 = $37.78, which is $3778%!

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#39

Oof

Oof

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Alex Fierro
Community Member
3 years ago DotsCreated by potrace 1.15, written by Peter Selinger 2001-2017

can someone,,, explain what is going on here??? like, I get it, but I also don't - obviously it's wrong but where is the error?

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#40

Off By 100x. Still Way Too High But Holy Crap How Do You Mess This Up?

Off By 100x. Still Way Too High But Holy Crap How Do You Mess This Up?

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Note: this post originally had 89 images. It’s been shortened to the top 40 images based on user votes.

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