In math, illustrate means: To show your work in pictures or figures.
what does key mean in math
Approximately
about
a
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
arithemetic mean
it mean per rate