A：Alright, children, let’s review. Tommy! Pay attention!
B：Sorry Miss Kadlec.
A：Okay, Crystal, now tell me, what’s four plus eleven?
C：Um...fifteen!
B：Miss Kadlec always asks Crystal, she’s such a teacher’s pet.
A：Okay...and what about fifty six minus sixty?
C：Um... negative four!
A：Very good... twelve times twelve?
B：Very good. Suck up.
C：One hundred and forty four!
A：Zero divided by one?
C：Zero!
A：How did you know that? Okay, smarty pants, the square root of two!
B：Bet you’re not going to get that one, know-it-all.
C：Um...one point four one four two one three five...