a) 10:50 − 9:03 =
[R]

b) 9:04 − 6:30 =
[R]

c) 11:15 − 9:22 =
[R]

d) 5:00 − 1:55 =
[R]

e) 12:02 − 10:46 =
[R]

f) 12:02 − 8:53 =
[R]

g) 10:22 − 7:35 =
[R]

h) 4:07 − 1:39 =
[R]

i) 10:08 − 7:41 =
[R]

j) 5:26 − 3:28 =
[R]