At the young age of 10, I had a paper route. Because of this, my mother taught me to count back change properly.
Now, it's just fun to mess with them.
Them: That comes to $4.37.
Me: Okay, here's $5.12.
Them: Uh...
Oh, that’s a bit cruel...but amusing.
Ah yes paper routes. Do kids have paper routes anymore?
In my area anyway, all paper delivery is done by adults in trucks or vans.
Somebody told me that due to child labor laws, and concerns about child molesters, newspapers converted delivery into an adult occupation only.
At the church I used to attend the doughnuts in the parish hall were sold by teenagers. There was a cash box, no register and the kids always had a hard time making change. I taught all of them how to count change. Some thought it was like magic. Some thought I must be really smart to know that. It is so easy to teach that, even to low IQ type. But it is like the ubiquity of calculators, I guess, the adults who already know how to reason and calculate don’t think young people need to learn any of that stuff because digits do it all for them, until the power goes out or the calculator is left some place. It all goes into producing generations of quasi-adults who can neither reason or calculate but depend entirely on outside sources to tell them what to think, or rather, what to accept because their think faculty is severely atrophied from lack of exercise.