The same as anywhere else. Each is used to refer to every one of two or more people or things, regarded and identified separately.
what does key mean in math
MULTIPACTION
a
about
I do not know of such a word related to math(s)
There is no such math word, so it does not mean anything. You may wish to check your spelling before posting questions!
The word at means the least
the word by means 'times' or 'multiply'
its mean like well its a math term its like distrubed fractions
it mean per rate
arithemetic mean
The word "mean" in math means the same thing as average. Mean is just a nickname for average.