this post was submitted on 18 Oct 2024
653 points (95.3% liked)

Curated Tumblr

5921 readers
66 users here now

For preserving the least toxic and most culturally relevant Tumblr heritage posts.

Here are some OCR tools to assist you in transcribing posts:

Don't be mean. I promise to do my best to judge that fairly.

founded 2 years ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[–] sugar_in_your_tea@sh.itjust.works 2 points 11 months ago* (last edited 11 months ago)

For me:

3974 * 438 -> 4000 * 438 - 26*438 ->
4000 * 438 - 26*440 - 26*2 -> 4000 * 438 - 20*440 - 6*440 - 26*2

And so on, and I'd do some of the intermediate calculations as I go (e.g. 20*440 and 6*440).

But that's only really needed if I need a precise answer. If I can get away with an estimate, I'll simplify it even more:

4000 * 430 ~= 43 * 4 * 10000 = 86 * 2 + 10000 = 1,720,000

Actual answer: 1,740,612. 4000 * 440 would be easier (I like multiplying 4s), but I know it would overshoot, so I round one up and the other down. Close enough for something like estimating how much a large quantity of something kind of expensive would cost (i.e. if my company gave everyone a hot tub or something).