0.5
To figure it, you can do the division problem 1 divided by 2
If you use a calculator, just type it in; if by hand, do long division with:
_0.50___
2|1.00
So 1 divided by 2 is zero, subtract 1-0 = 1 bring down a zero, 10 divided by 2 is 5 with no remainder, so you're done. You can keep adding more zeros to the right until you have no remainder, or it starts repeating.
We write .5 or 0.5 as the decimal for one half.
12 and one half as a decimal is 12.5
.5
1.5
11/2% = 0.015
We write .5 or 0.5 as the decimal for one half.
12 and one half as a decimal is 12.5
1.5
.5
1.5"
0.5
0.5
.5
1.5
1.5
1.5
The decimal form of 1/2 is 0.5