125
The number half-way between 125 and 150 is (125 + 250) / 2 = 187.5.
Yes, half of 250 is 125. To prove it: use a calculator and calculate 125 times 2.
62.5
125 kg is equal to 8 and a half slugs (which is of course 19 and a half stone, or 1,929,000 grains)
.125 is half of .25
125
125
62.5
125
No. .125 is half of .25
12.5 of them