We write two and a half as 2.5 in decimal form.
0.025
0.0025
that would be .075 in decimal form
4.5 4.5
We write .5 or 0.5 as the decimal for one half.
Half of 4.5 in decimal form is 2.25
We write two and a half as 2.5 in decimal form.
50 and a half cents as a decimal is 0.505
12 and one half as a decimal is 12.5
Half a dozen is 6.
87.5
0.5
It is 0.5
.5
7.5
3.5