These handy flashcards can be laminated and used for years! All symbols are contained on one page, so it won't eat up your copy limit, you only need one copy per student. These flashcards are fun to use in my Order of Operations Relay Race (see my store), so that you can informally assess if students know PEMDAS and they have playing at the same time! You can also have students hold up the appropriate flashcard that matches a math key word (ex. difference; that flipchart is also in my store) and of course you will be informally assessing the students all the while.