0.2=1/5?

0.9=9/10

0.80=4/5?

0.55=11/20

4 answers

All are correct. :-)
1.5=1/2

0.5=1/2

0.06=3/50

0.75=3/4

2.25=1/4

0.60=3/5
These two are wrong. You forgot the whole numbers.

1.5=1/2

2.25=1/4
0.60=3/5

0.015=3/200

0.05=1/200