Two Of Pentacles: Swapping One Thing For Another

2 PentsRandom Mathematical Fact: I was teaching my students how to turn fractions into decimals and back again today and it struck me how this situation is embodied in the Two Of Pentacles card. For those who have tried to block maths from their mind since they left high school a fraction looks like this 1/10 and in decimal notation it would be described like this 0.1. In maths language 1/10 = 0.1 = 1/10. They are interchangeable.

And it seems to me that describes a definite facet of the Two Of Pentacles card: The ability to swap one thing for another!

What do you think? Makes sense or not?