a) 11:06 − 7:16 =
[R]

b) 8:00 − 5:11 =
[R]

c) 5:08 − 2:24 =
[R]

d) 11:20 − 8:02 =
[R]

e) 3:16 − 2:08 =
[R]

f) 3:40 − 2:17 =
[R]

g) 6:09 − 3:43 =
[R]

h) 9:02 − 6:20 =
[R]

i) 6:07 − 2:30 =
[R]

j) 10:35 − 7:23 =
[R]