実数は有理数無理数に分かれます
有理数も更に細分化します

Real numbers are divided into rational and irrational numbers
Rational numbers are further subdivided into rational and irrational numbers.

危険物取扱者って数学の知識どれくらい必要なん?

How much math knowledge is required to become a Hazardous Materials Handler?

次数の定義に時間使ってるのに本当に近道か?
あんなもん2次3次の方程式が出てきた時の判別の為に産まれた言葉であって今覚える必要ないやろ
知識は都度蓄えないといけないけど作業と並行しないと無駄に時間使うやん
料理上手くなるには料理本読むだけでもがむしゃらに料理するだけでも限界あるねん

Is it really a shortcut when you're spending so much time defining degrees?
That's a term that was invented to identify quadratic and cubic equations when they come up, and there's no need to learn it now.
You have to accumulate knowledge as you go along, but if you don't do it in parallel with your work, you're wasting your time.
There's a limit to how much you can learn from reading cookbooks and how much you can cook without even trying.

まず自分が何をしたいかを把握しよう
そして数値を明確にしよう
元の値段から20%を引いた後の値段を知りたいんだよな?
元の値段-20%=値引き後の値段
これが知りたいと
じゃあこれに数値を入れていってみよう

First, let's figure out what you want to do.
And let's get the numbers straight.
You want the original price minus 20%, right?
Original price - 20% = price after discount
That's what you want to know.
Then let's put in the numbers.

双子の研究でわかったのは国語は努力と成績がほとんど関係ないけど数学は努力が成績に大きく関係するということ

What the twins' study showed is that in language arts, effort has little to do with grades, but in math, effort has a lot to do with grades.

例えば九九や基本的な面積の求め方は、公式の再発見も容易だけどわざわざ再発見するひまなく一瞬で求められるでしょ
それは暗記の利点であり、暗記が悪ではないということ
アホは頭いい人を物凄い超能力者か何かかと勘違いしがちだけど、結局どこまで効率かするか、つまりどこまで暗記してシンプルに落とし込むかだよ
暗記すら大変な人には難しいのかもだけど、そういう人は九九もいちいち足し算してるのか?

For example, it is easy to rediscover a formula for finding 99 or a basic area, but you can find it in an instant without having to go to the trouble of rediscovering it.
That is the advantage of memorization, not its evil.
Idiots tend to mistake smart people for having great psychic powers or something, but in the end, it's all about how efficient you can be, that is, how much you can memorize and how much you can reduce to simplicity.
It may be difficult for those who have a hard time even memorizing, but do such people add up all the 99s?