Final answer:
Numbers are not treated as 'proper nouns' in mathematics because they represent quantities or values, not specific names. Treating numbers as 'proper nouns' would make mathematical operations more complex and introduce confusion. Numbers have their own rules and properties in mathematics.
Step-by-step explanation:
Numbers are not treated as 'proper nouns' because they are not specific names of people, places, or things. Proper nouns refer to particular entities, while numbers represent quantities or values. For example, the number 5 represents the quantity or value of five, but it is not a specific name.
Additionally, treating numbers as 'proper nouns' would make mathematical operations and calculations more complex. Numbers are used in mathematical equations and formulas to represent variables and constants, and treating them as 'proper nouns' would introduce unnecessary confusion and ambiguity.
It is important to understand that numbers have their own rules and properties in mathematics. They are not treated as 'proper nouns' because they serve a different purpose in the language of mathematics.