“What is the plural form of the grades A-, A+, B+, etc.?”
I see nothing wrong with pluralizing A minus as A minuses, like any other word. In the abbreviated form, an apostrophe would be appropriate: A−'s.
“What is the plural form of the grades A-, A+, B+, etc.?”
I see nothing wrong with pluralizing A minus as A minuses, like any other word. In the abbreviated form, an apostrophe would be appropriate: A−'s.