Six and a half, or in other words 6.5.
six tenths or three fifths
"What is four and a half plus three and five sixths": Eight and one third (8 1/3)
One and one-half plus one-tenth equals 1 and six tenths or one and three fifths.
six and a quarter
six quarters. That is equal to one and half.
8 and 3/5 (Eight and three fifths)
11 1/10 eleven one-tenths... Obviously.
six and three sixths or six and one half