I don't know what a "mixed decimal" is, but 3 over 8 is 0.375
7 and 3/8 = 59/8 as a fraction or 7.375 as a decimal
67/8 is already in its simplest form but as a mixed number it is 8 and 3/8 which is 8.375 as a decimal
0.125 is the decimal of 1/8
8 and 2 over 3 in a decimal is expressed as 8.6666 . . .
31/8 = 3.125
3 and 5/8 is a mixed number which is 29/8 as a fraction or 3.625 as a decimal
7 and 3/8 = 59/8 as a fraction or 7.375 as a decimal
8/3 = 2 2/3 = 2.66666666666666666666666666666666666666666666666667
67/8 is already in its simplest form but as a mixed number it is 8 and 3/8 which is 8.375 as a decimal
0.125 is the decimal of 1/8
11/8 as a decimal is 1.375.11/8 as a percent is 137.5%.11/8 as a mixed fraction is 1 and 3/8.
It is: -3/8 = -0.375 as a decimal
8 and 2 over 3 in a decimal is expressed as 8.6666 . . .
31/8 = 3.125
It is: 6 and 3/8 = 6.375 as a decimal
3/8 as a decimal is equivalent to 0.375
25 over 8 is 3 and 1 over 8 as a mixed number. 25/8 = 3 and 1/8.