this post was submitted on 04 Apr 2025
363 points (88.4% liked)
Technology
69346 readers
3765 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related news or articles.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Is that a weird method of doing math?
I mean, if you give me something borderline nontrivial like, say 72 times 13, I will definitely do some similar stuff. "Well it's more than 700 for sure, but it looks like less than a thousand. Three times seven is 21, so two hundred and ten, so it's probably in the 900s. Two times 13 is 26, so if you add that to the 910 it's probably 936, but I should check that in a calculator."
Do you guys not do that? Is that a me thing?
This is pretty normal, in my opinion. Every time people complain about common core arithmetic there are dozens of us who come out of the woodwork to argue that the concepts being taught are important for deeper understanding of math, beyond just rote memorization of pencil and paper algorithms.
The problem with common core math isn’t that rounding is inherently bad, it’s that you don’t start with that as a framework.