What are the meaning of 4 fundamental operation?

Answer 1

Addition (+): To consider two previously separate quantities together as one singe quantity.

2 + 2 = 4

Subtraction (-): To find the difference between to quantities (the change in 'size' which makes them different)

3 - 2 = 1

Multiplication (x): To add the first quantity to itself as many times as indicated by the second quantity.

3 x 2 = 3 + 3 or 2 + 2 + 2 =6

Division ( / ): To find the ratio between two quantities (how many times does the first quantity 'fit' in the second one)

6/2 = 3

The Greeks used to think this in terms of areas and lengths.

Note: This is an abbreviated interpretation, this isn't easier than answering "what is love?" or "what is the meaning of a cloud?"

Answer 2

In mathematics they are division, multiplication, addition and subtraction.