Question

1-1/2, 1-1/3, 1-2/3, 1-1/4.

Answer 1

1-1/2=1/2
1-1/3=1/3
1-2/3=1/3
1-1/4=1/41/2=0.51/3=0.33
1/3=0.33
1/4=0.25

Answer 2

1-1/2=1/2

1-1/3=2/3

1-2/3=1/3

1-1/4=3/4