http://www.purplemath.com/modules/setnotn.htm

I think the definition of a 'fraction' raises some ambiguity: what is a fraction in terms of what can be defined by ?

All integers can be placed in a fraction, . ?

Decimals can convert to fractions, are they defined by ? And does this apply to both terminating and recurring decimals or just terminating?

I've never come across set terminology in class so I'm curious to know when the average school would use these.