79/80 = 0.9875
0.79: 79 over 100 is the same as 79 ÷ 100
79/1000 = 79 ÷ 1,000 = 0.079
79/100 = 0.79
Expressed as a decimal, 150/8 = 18.75
It is 3.95
0.79
9.875
If you mean: 4 and 79/80 then it is 4.9875
21over 150 written as a decimal = 0.14
150/100 = 1.5
150/50 = 150 ÷ 50 = 3