a) 8:38 − 6:20 =
[R]

b) 9:51 − 8:01 =
[R]

c) 9:42 − 6:10 =
[R]

d) 9:22 − 5:26 =
[R]

e) 10:30 − 8:01 =
[R]

f) 3:08 − 1:12 =
[R]

g) 3:30 − 2:06 =
[R]

h) 5:11 − 3:47 =
[R]

i) 11:07 − 8:41 =
[R]

j) 7:09 − 5:15 =
[R]