Questions about example sentences with, and the definition and usage of "Math"

The meaning of "Math" in various phrases and sentences
 Meanings of words and phrases

What does I did some backofthenapkin math. mean?

They calculated quickly. When we say "it was on the back of a napkin," it means we did it quickly. It wasn't formal. It makes you imagine the person was eating dinner, suddenly had an idea, and had to write it on the nearest paper, which was a napkin. :)

Example sentences using "Math"

Similar words to "Math" and their differences
 Similar words

What is the difference between with math and in math ?

You could use both. Just remove the s at the end of maths.
 Similar words

What is the difference between The subjects, especially math, is difficult. and The subjects, especially math, are difficult ?

I don't think so, but sometimes when people talk fast they forget they were talking about a plural like that and say singular. so it's not formally correct but it's a common enough mistake that it's not going to sound weird

Translations of "Math"
 Translations

How do you say this in English (US)? je suis fort en math

I am strong in Math. ou My math is strong ou I am good with Math.

Other questions about "Math"
 Other types of questions

To solve questions of the math is involved by motivation. It's like sports does this sound natural?

Solving math problems is like sports, it requires motivation.
 Other types of questions

What do "numerator" and "denominator" mean as words other than their definition in fraction. I know that numerator is 2 and denominator is 5 in 2/5 (two fifth), but what do "to numerate" and "to denominat...

The word 'denominator' is sometimes used outside mathematical context, as in the phrase "common denominator" which in nonmathematical terms usually refers to something that a group of things/people/events have in common/are linked by. E.g. The common denominator linking this string of murders is that the victim's right shoe is always missing from the scene of the crime.
 Other types of questions

What does "make he math come out"mean? Leonard: At least I didn't have to invent twentysix dimensions just to make the math come out.

This is pretty technical. That line is from the show Big Bang theory and is based on a theory called string theory where it theorizes there are 26 dimensions. Basically having the math come out means his math calculations ended up with 26 dimensions to make sense. It seems kind of absurd to have 26 dimensions just for his math to make sense (come out), so that's why Leonard was making fun of Sheldon
 Other types of questions

Do you use "would rather" only for unrealistic cases or both unrealistic and realistic cases? e.g. 1. I would rather die than live in this village forever. (Unrealistic) 2. I would rather study English th...

Sentence 2 is fine you say that you prefer to study english over math
 Other types of questions

I could have been expelled from the school if the professor of my math class had reported my academic dishonesty to the department. does this sound natural?

"I could have been expelled if my math professor had reported my academic dishonesty to the department." is a bit more natural to me.
 Other types of questions

It was the first day of a regular examination. I have math,English expression and Japanese. I did well in math and English expression but I didn't well in Japanese because I didn't study it enough. I also d... does this sound natural?

@toramoca: It was the first day of my regular examination (my exams). I had math, English expression, and Japanese. I did well in math and English expression, but I didn't do well in Japanese because I didn't study enough. I did some studying for tomorrow's exam. I am ready for it.