a) 9:34 − 6:25 =
[R]

b) 10:01 − 7:04 =
[R]

c) 6:26 − 3:29 =
[R]

d) 6:35 − 5:10 =
[R]

e) 12:00 − 8:57 =
[R]

f) 11:35 − 10:03 =
[R]

g) 10:36 − 9:10 =
[R]

h) 11:21 − 9:36 =
[R]

i) 5:32 − 2:20 =
[R]

j) 10:30 − 9:09 =
[R]