No they definitely teach math but unfortunately math is kind of useless when they don't teach critical thinking.

Because then people blind themselves with their own bias and refuse to actually critically think about what they're reading and realize that they misread it or misunderstood it.

Practice is important. People definitely learn this level of math, but not using it for years dulls the senses. On top of that, lots of people scrape through school doing the bare minimum. (Not always their fault of course. Not everyone has ample opportunity to excel in school due to a variety of things.) From what I hear, the bar for graduating high school is not incredibly high, so people like this don’t surprise me.

You get a pass on pretty much every subject because the school's interested in churning out worker drones rather than thinkers. Do this long enough and you get Trump supporters.

Yeah if you put it:

100 - (100 x 0,1) = 90

90 + (90 x 0,1) = 99

It comes quite obvious. And I know the brackets are redundant, but my coder mind forces brackets to all math formulas for readability.

Was it on purpose, maybe.

This is clearly about the US stock market crashing. In that case it's always the days gain/loss, in which case Yang is the only person who is right.

This is important because a lot of people saw "down 10%" and now "up 10%" without realizing that's still day over day loss.

Percent increase/decrease is change/original.

Tide comes in, tide goes out. You can't explain it!

You want concerning....talk to teachers about gen alpha. They can't read well, their grammar sucks, they can't use PC's, they're super gullible and believe/want to purchase whatever online influencers tell them to, and just believe whatever pops up at the top of their search result or AI says.