Half
Whenever you halve a number, you round down.
If multiple sources halve a number, the number is halved each of those times — halving stacks.
Half, Quarter, Eighth, etc.
Median
In order to take the median of three numbers, you put them in order and choose the middle value. So we can get the following medians:
- Values: 1; 2; 3 Median: 2
- Values: -4; 0; 6 Median: 0
- Values: -2; -1; 0 Median: -1
Other Math Rules
Rounding
Unless otherwise specified, decimal numbers are rounded down.
- 4.5 = 4
- 4.1 = 4
- 4.9 = 4
Negatives
Note that half of -1 is -0.5. Rounded down, this yields -1. Tricky!