Here’s a skill you might find useful. Pick any number – I chose 485. Add the digits of the number:
4 + 8 + 5 = 17. Then add the digits in 17: 1 + 7 = 8. Get the drift. We want a one-digit number. Close to 4,000 years ago this was a very valuable skill. Then stuff happened and it was lost until about 200 years ago. I was told that not very many people know about it today. That’s it – this App plays with that concept. If you’re not familiar with summing of digits; you are going to be amazed. Very simple but very useful – Very.