this post was submitted on 25 Jun 2026
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Lemmy Shitpost

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[–] negativenull@piefed.world 175 points 3 weeks ago (1 children)

Strange Panzers lying in ponds distributing shells is no basis for a system of government…

[–] Pudutr0n@lemmy.world 62 points 3 weeks ago (2 children)

Surely you don't think supreme executive power derives from a mandate from the masses?

[–] rockSlayer@lemmy.blahaj.zone 33 points 3 weeks ago (1 children)

As opposed to what, a farcical aquatic ceremony?

[–] Neverbeaten@lemmy.world 7 points 3 weeks ago (2 children)
[–] Nouvellalia@lemmy.world 9 points 3 weeks ago

No one expects the python imposition!

[–] wonderingwanderer@sopuli.xyz 5 points 3 weeks ago (1 children)

And now for something completely different

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[–] wonderingwanderer@sopuli.xyz 6 points 3 weeks ago

I thought we were an autonomous collective

[–] darkdemize@sh.itjust.works 107 points 3 weeks ago (7 children)

This is far too useful to be a shitpost.

[–] Marthirial@lemmy.world 16 points 3 weeks ago

I know right. I even open the calculator app to verify before committing to memory this nugget.

[–] idegenszavak@sh.itjust.works 9 points 3 weeks ago (2 children)

Barely, only if you choose round and small numbers. 67% of 347 or 347% of 67 which one is easier?

[–] MajinBlayze@lemmy.world 12 points 3 weeks ago (4 children)

347 is pretty damn close to 350.

350% of 67 =3.5 x 67 ~ 180+21+33=234

[–] TachyonTele@piefed.social 6 points 3 weeks ago

SPEAK ENGLISH! Jeez

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[–] Proprietary_Blend@lemmy.world 22 points 3 weeks ago (4 children)
[–] xkbx@startrek.website 36 points 3 weeks ago (5 children)

So 50% of 50 is the same as 50% of 50. Both equal 5

[–] blx@piefed.zip 26 points 3 weeks ago (3 children)

Both equal 5

More like 5 of these

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[–] CIA_chatbot@lemmy.world 9 points 3 weeks ago (1 children)

And the other half is 0! 5 0

[–] virku@lemmy.world 6 points 3 weeks ago* (last edited 3 weeks ago) (7 children)

0! is 0.

Edit. I remembered wrong. Keeping it like this as it is funnier that way.

[–] CIA_chatbot@lemmy.world 6 points 3 weeks ago (1 children)
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[–] wander1236@sh.itjust.works 31 points 3 weeks ago (1 children)

Multiplication is commutative.

50% of 6 == 50/100 x 6 == (50 x 6)/100 == 50 x 6/100 == 6% of 50.

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[–] arctanthrope@lemmy.world 10 points 3 weeks ago

taking x% is just multiplying by x/100, and multiplication is commutative. x% of y is just y×x×1/100, which is the same as x×y×1/100

you can also ignore the % and divide by 100 at the end. for example, what's 5% of 5? that might take a minute to work out. what's 25/100? you instantly know it's 1/4

Percentages can be expressed as multiplication and multiplication is commutative (the order doesn't matter).

[–] stickyprimer@lemmy.world 17 points 3 weeks ago (1 children)

Fuck. I had to calculate 4% of 7 a few minutes ago and didn’t know this. I say fuck because it wouldn’t have helped me anyway.

[–] incogtino@lemmy.zip 5 points 3 weeks ago* (last edited 3 weeks ago) (3 children)

4% x 7

= 4% x 100 x 7 ÷ 100

= 4 x 7 ÷ 100

= 28 ÷ 100

= 0.28

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[–] hperrin@lemmy.ca 17 points 3 weeks ago

6% of 50

6/100 * 50/1

(6 * 50) / (100 * 1)

(50 * 6) / (100 * 1)

50/100 * 6/1

50% of 6

Works for multiplying any fraction, not just percents.

2/3 of 5 is the same as 5/3 of 2.

2/5 of 7/8 is the same as 7/5 of 2/8.

[–] jaybone@lemmy.zip 16 points 3 weeks ago (1 children)

Everyone’s talking about this math. I’m wondering about the panzer.

[–] Jankatarch@lemmy.world 7 points 3 weeks ago

They said the water could reach up to 50% of its 1.7 meter height before causing problems, panzer tried calculating 1.7% of 50 meters from head, this is the result.

[–] taiyang@lemmy.world 16 points 3 weeks ago* (last edited 3 weeks ago) (5 children)

I was waiting in a car in front of a math tutoring building and was doing the math problems advertised on their window (as one does, of course) and the 7% of 250 is indeed probably easiest as 250% of 7, aka 2.5x7, which is 17.5.

I did it a few other ways, though. 7% of 1000 is 70, then divide by 4 for 17.5. Well, more like, divide by 2 for 35 and again for 17.5, but yeah... mental math is fun.

[–] manefraim@lemmy.world 10 points 3 weeks ago (1 children)
[–] watson387@sopuli.xyz 6 points 3 weeks ago (1 children)
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[–] DarrinBrunner@lemmy.world 15 points 3 weeks ago (2 children)

Let's try this on a sale item. Hmm, let's see, the sign says 25% off $6.99. So that's the same as, let's say, 7% off $25. Oh, yeah, that is much easier. /s

[–] sneezycat@sopuli.xyz 6 points 3 weeks ago (1 children)

Wait...
So 25% off $100... is 100% off $25! Trollface

[–] LordKitsuna@lemmy.world 10 points 3 weeks ago (1 children)

I mean if you remove the word off it works. 25% off $100 is $25 100% of 25 is 25 it's still reversible you just let the word off confuse you

[–] derfunkatron@lemmy.world 7 points 3 weeks ago

You could also make sure to carry “off” to both sides when you swap:

25% off of $100 is 100% of $25 off

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[–] kryptonianCodeMonkey@lemmy.world 14 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Another counter-intuitive percentage fact: A 10 percent discount and a 10 percent fee can be calculated in either order but they don't cancel out.

Example, 90% of (110% of 10) = 110% of (90% of 10). But neither of those is evaluates to 10. They evaluate to 9.9.

For any percentage X, and any base value C, (100 - X)% x ((100 + X)% x C) = (100 + X)% x ((100 - X)% x C) = (100 - (X^2/100))% x C

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[–] Botzo@lemmy.world 11 points 3 weeks ago (3 children)

Great for calculating tips!

Let's see: the bill was $138.72, so I just need 138.72% of 20. And we can subtract 100% and just add the 20 back at the end, then convert the percentage to a decimal so (.3872 * 20) + 20 = 7.744 + 20 or $27.74.

Easy!

[–] snooggums@piefed.world 16 points 3 weeks ago (2 children)

I prefer taking 10% and doubling it for a 20% tip.

Take the total, moved the decimal one digit to the left, double it and round to the nearest dollar. I round up at the beginning and end as well which is either close enough or a dollar high if the change is small enough.

$138.72 > 139 > 13.9 > 27.8 > $28

Close enough!

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[–] Catoblepas@lemmy.blahaj.zone 9 points 3 weeks ago (3 children)

I always just do 10% (easy because you move the decimal one place) and then either double that or add half of it to itself for a 15-20% tip.

[–] Botzo@lemmy.world 6 points 3 weeks ago

For sure. Reversing the percentages here makes this far more difficult. I just felt we needed to shittify this post a little.

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[–] SnarkoPolo@lemmy.world 10 points 3 weeks ago (1 children)

True mathematics derives from established mathematical theory, not some farcical aquatic armored vehicle!

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[–] JackTea@piefed.world 10 points 3 weeks ago (1 children)

Oh panzer of the lake, why am I still single?

[–] MonkderVierte@lemmy.zip 11 points 3 weeks ago* (last edited 3 weeks ago)

Are you sure you can stand the answer?

[–] TachyonTele@piefed.social 9 points 3 weeks ago

I hate math so much.
Thank you for this

[–] _thebrain_@sh.itjust.works 9 points 3 weeks ago (1 children)

How is 17% of 83.27 easier then 83.27% of 17?

[–] MrEff@lemmy.world 26 points 3 weeks ago

Oddly, yes.

Percentages also add together in partials. As in 10%+5%+2% = 17%

So, you start with the 10% by moving the decimal over 83.27 becomes 8.327

Then add half of that (5%) to its self and get 12.49 (rounded)

Then take the 10% number and move the decimal over once more (1%) for 0.833 and double it (from 1% to 2%) and get 1.666 and add that to your running total to get your answer of 14.16 (rounding)

And when I calculator check this I got 14.1559.

[–] melsaskca@lemmy.ca 8 points 3 weeks ago

It was recently discovered that all AI everywhere was connected to the Panzer all along. /s

[–] SpankyDoodle@eviltoast.org 8 points 3 weeks ago (1 children)

In either case I would multiply 5 by 6 and move the decimal. Interesting though.

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[–] starik@lemmy.today 6 points 3 weeks ago (1 children)

Just always convert the percentage to a decimal, and it’s easy either way.

0.06x50 is as easy as 0.5x6. They’re both just 5x6.

All these comments like “What about 47% of 3.11?” Well, yeah, of course it’s harder to multiply two- and three-digit numbers than it is to multiply single-digit numbers.

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[–] justme@lemmy.dbzer0.com 6 points 3 weeks ago* (last edited 3 weeks ago) (5 children)

transitive and commutative

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