Insufferable mathematicians

Elizabeth had some homework this week which involved asking a member of her family to write some random numbers between 0 and 1,000 on a piece of paper for her to put in the correct numerical order. She asked her father and this is what he gave her:

869, 17, 3.5, 29, 19, 437, 832, 999, 1, 412, 3, e, π, √2

Elizabeth is 7 years old.