a) 11:09 − 8:13 =
[R]

b) 4:02 − 2:29 =
[R]

c) 7:19 − 4:04 =
[R]

d) 9:16 − 7:06 =
[R]

e) 6:32 − 5:26 =
[R]

f) 11:02 − 9:18 =
[R]

g) 7:20 − 3:27 =
[R]

h) 8:14 − 6:00 =
[R]

i) 8:08 − 4:43 =
[R]

j) 5:29 − 2:19 =
[R]