1.5
One half is 1/2, which is 0.5 written as a decimal. 3 and (plus) 0.5 is 3.5. So 3 and one half is written 3.5
How 1 half, 1/2 (fraction notation), is written in decimal notation (with 3 decimals) ? 1/2 = 0.500
To change 3 and a half to a decimal you can either do 3.5, 3.50 or 3.500.A half as a decimal is 0.5 and 3 is already a decimal number so 3 and a half is 3.5 in decimal form.
A half written as a decimal is 0.5
decimal
720.5
12.5
12.5
1 out of 3 written as a decimal is 0.33333333333.....
One half percent can be written in decimal as 0.005 or just .005
3.5
3.5