So wise.
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[–] 16 points 4 months 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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  • [–] 3 points 4 months ago* (1 child)

    I either do this, or mentally divide by 5 (how many 5s make this number?), only caring about the closest whole number - I prefer to tip in whole dollar amounts to make the math easy.

    Eg. $39.53 is about $40, 40 is 8 fives, so tip $8

    If the service wasn't great I round down instead of up.

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