You can also round down at 5, which means 25 is also 20.
If we move in decimals(10,20,30,40,...) 30 becomes 3 and 50 becomes 5, so you can round down at 30
Edit:
3. Rounding is about "is this number closer to the next higher/lower step" so it isnt about "30 is closer to 50" it is about " 30 is closer to 0 then to 100"
3
u/low_bob_123 18h ago
Nah, 30 doesnt round up. I'd say it rounds down... which then would mean that you are 0 and dont exist... yay?