0.5,1/5,0.35,12/25,4/5 in least to greatest

First change them all into fractions or decimals. Decimals a probably the easiest.

1/5 = 0.2 12/25 = 0.48 4/5 = 0.8

Order: 0.2, 0.35, 0.48, 0.5, 0.8

Then you change the decimals that you converted back into the fraction form.

Answer: 1/5, 0.35, 12/25, 0.5, 4/5