The same as it does in other contexts. It means change.
"Vary" means "change".
There is no such math term. There is, on the other hand, an astronomical term "equinox".
The Value of a term
The math term greater means bigger in numerical size or larger in order of the numbers.
countless and ongoing
Equivalent or Congruent
b
number
It means kilo meter is a math term for meters
Same as in any other context - it does not always have the same value.
A keystroke means that you press a key on a keyboard. It isn't specifically a math term.
Nothing. It is not a mathematical term.