I have not read all the thread, but I remember being to be taught to divide into pounds, shillings and pence when I was aged 5. On slates. I am not making this up, it was in 1965, Miss Dane being my teacher. In 1971 when I was 10, they wheeled the black-and-white TV into the class to show the programmes called “Decimal 5” with the theme tune sung by The Scaffold.