What I learned in math

I think the main thing I learned were a lot definitions .For example :the natural numbers:which are the counting numbers for example 12345 . and the whole numbers which are like the natural numbers but include zero for ex.012345.

I think the main thing I learned were a lot definitions .For example :the natural numbers:which are the counting numbers for example 12345 . and the whole numbers which are like the natural numbers but include zero for ex.012345.