1)1/2=5/10=0.5

2/5=4/10=0.4

7/5=14/10=1.4

4/5=8/10=0.8

2)1/4=25/100=0.25

3/20=15/100=0.15

8/25=32/100=0.32

7/25=28/100=0.28

1/50=2/100=0.02

3)6/125=48/1000=0.048

3/250=12/1000=0.012

7/200=35/1000=0.035

9/500=18/1000=0.018