Forgot one

I forgot one.... Ada has been able to count to 20 for a long time and she's figured out how to add 1's to the 20,30, 40 numbers.... but I didn't realize that she's started counting in 10's.  I heard her on the piano the other day.  She'd play a note and say 10, the next note 20, the next note 30, etc... I think she got confused on seventy... I don't remember, but it was dang cute.