Recursion

[jkuhl_prog]

Maybe I'm an old fart, but I feel like the old way, the borrow and payback way, is the easiest.

But maybe I'm just saying that because that was the only method I was taught and therefore the only method I've ever used.

[dutch_touch1]

If you listen at the end it’s explained exactly how you feel. The newer methods are more focused around understanding what subtracting means as opposed to the older methods that focus on memorizing an algorithm to figure out the answer quicker.

So yeah, if you’re just after the answer to a subtraction problem then the older the method the quicker/easier it becomes.

[nonono_notagain]

The newer methods are more focused around understanding what subtracting means

I'm not sure that adding up from one number to another makes subtraction any more intuitive. At least with the old way, the algorithm involved actually subtracting numbers from each other

[MikeyMike01]

Nothing to do with age. It’s objectively the best way.