I don't know why, but when I was first learning to count it went like this : 1... 2... 3 ...4... 5 ...6 ...7... 8... 9... 10 ...11 ....12 ....30... 31... 32 ...33 .....
I can't remember why I thought you went from 12 to 30 but I counted like that for almost a year till my dad told me the correct way....
A childhood belief about counting

others believed things like this
- I thought that Count Dracula was the count from Sesame StreetAnon
- My 7 year old nephew holds the opinion that the correct name for a pidgeon is a "city chicken".— Bastard
- I used to believe that all the first names of judges was Justice till I was doing my 4th high school year.— Tafadzwa
- I thought to count to one thousand you did 1-100, then 100-199, then came 1,000.— Anon!
- When I was 10 years old, I used to believe that the accountants always counted money all the time.— Claudia P. R.G.
- I used to believe that copying definitions out of a book counted as plagiarism!Anon