7 halves = 3.5
Are you serious? Seven. There are seven halves in seven halves.
19 halves as a decimal is 9.5.
Three halves is one and a half, or 1.5 when written as a decimal.
2.0 is the decimal of four halves
2.5
1.5.
1.5
2.0
Two halves = 2*0.5 = 1 (or 1.0, if you must)
25/2 = 12.5
15 / 2 = 7.5