Answer :

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

Answer:

[tex]\frac{1}{5}[/tex], 0.35, [tex]\frac{12}{25}[/tex], 0.5, [tex]\frac{4}{5}[/tex]

Step-by-step explanation:

We have to arrange these numbers in least to greatest.

0.5, [tex]\frac{1}{5}[/tex], 0.35, [tex]\frac{12}{25}[/tex], [tex]\frac{4}{5}[/tex]  

First we convert all the fractions in decimal numbers by dividing the numerator by denominator.

[tex]\frac{1}{5}[/tex]  = 0.2

[tex]\frac{12}{25}[/tex] = 0.48

[tex]\frac{4}{5}[/tex] = 0.8

Now we can easily arrange the numbers in least to greatest.

0.2, 0.35, 0.48, 0.5, 0.8

or

[tex]\frac{1}{5}[/tex], 0.35, [tex]\frac{12}{25}[/tex], 0.5, [tex]\frac{4}{5}[/tex]