I've been clearing out my grandmother's things since she died and found this sheet of paper in a drawer, which as far as I can tell is a list of ways to calculate the numbers 1-100 using only the number four. Some of the missing ones have been hand-written on another sheet.

But "⌊4" appears in so many of them and I can't work out what it is or what it means? It represents 24 in most of the equations I checked, although for 50 it doesn't work out that way.

List of equations using only the number 4 to count up the numbers 1-100.

I'm using the floor function symbol in this ask but I have no idea what it's actually meant to be. It looks like a right angle symbol but that doesn't make any sense. It's more angled in some of the handwritten ones:

https://preview.redd.it/6izsr8xrgpad1.jpg?width=1817&format=pjpg&auto=webp&s=dd98f1b79a7fc4391b342dae83f6dbf47f466311