When DD6 was 18 months old we were playing with some crayons on the floor , I asked her how many crayons did she have in her hand she said "8" I looked at her hand, she had 9 so I asked her again "how many crayons do you have"? she hid one behind her back and said "8". Good thing I was sitting on the floor, because I was about 8 or 9 months pregnant at the time smile She also was rote counting to 100 before 2yrs.