1312
this one goes out to the arts & humanities (mander.xyz)
submitted 7 months ago by fossilesque@mander.xyz to c/science_memes@mander.xyz
310 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[-] exocrinous@startrek.website 2 points 7 months ago* (last edited 7 months ago)

I calculated it in my head without memorising all the multiplication tables. I just realised that 7*3.5 is equal to (7*5+7*2)/2. And that 49/2 is equal to 40/2+9/2. Easy peasy. This is why I failed second grade math, because multiplication tables are only useful for doing operations a few seconds faster.

[-] RarePossum@programming.dev 1 points 6 months ago

There's a much easier way.

7x3.5 is the same as 7x3 plus half of 7. That's 21 plus 3.5 is 24.5

The funny thing is you did this for the division when you could do it for the entire thing.

this post was submitted on 11 Apr 2024
1312 points (95.7% liked)

Science Memes

10923 readers
2071 users here now

Welcome to c/science_memes @ Mander.xyz!

A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules

  1. Don't throw mud. Behave like an intellectual and remember the human.
  2. Keep it rooted (on topic).
  3. No spam.
  4. Infographics welcome, get schooled.

This is a science community. We use the Dawkins definition of meme.

Research Committee

Other Mander Communities

Science and Research

Biology and Life Sciences

Physical Sciences

Humanities and Social Sciences

Practical and Applied Sciences

Memes

Miscellaneous

founded 2 years ago
MODERATORS
Sal@mander.xyz
fossilesque@mander.xyz
SciBot@mander.xyz