this post was submitted on 25 Jun 2026
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Funny

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[–] lung@lemmy.world 6 points 1 day ago (1 children)
[–] rockSlayer@lemmy.blahaj.zone 1 points 1 day ago* (last edited 1 day ago) (1 children)

What's the problem with this method? I figure out tips through mental math, without any paper. This is just explaining how I do that mental math

[–] lung@lemmy.world 1 points 1 day ago* (last edited 1 day ago) (1 children)

Yeah you did it in the hardest way possible hahaha

Just subtract 17 from 100 to get the cents. 83. There, done. Or at least 100 - 10 - 7

[–] rockSlayer@lemmy.blahaj.zone 3 points 1 day ago

I can't do mental math that easily. I struggle with visualizing it, I think better in multiples of 5, and subtraction is more intuitive to me