It can quite often be written as "=".
2/3 is 2/4
Equal
A letter in math can stand for any number
Math is an abbreviation of mathematics: it is not an acronym. So the h does not stand for anything!
decigram
Centigrams
inches
Abbreviation.
the letter L can stand for a variable.
it stands for milligrams
grams or gallon
multiplication
An unknown number.
lower quartile(this is for math)