it deals with proportion.
think of a map ... it has a "scale".
it would be silly to try and create a life-size map of a city, because it would cover the whole city.
instead, they might use a "scale" to say that each inch on the map represents 1 mile in real life.
a model airplane might have a scale of 1:30 meaning that if every measurement on the model were multiplied by 30, then it would be the size of the real thing.
if you scale something by a factor of 10, you make everything 10 times bigger (or further)
a scale factor of 1/10 makes everything 10 times smaller.
the number used to muliplpy the lengths of a figure to stretch or shrink it to a similar image.
what does key mean in math
Approximately
about
a
I do not know of such a word related to math(s)
"Bring the scale and let's weigh these math books."
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