a) 9:15 − 7:01 =
[R]

b) 10:07 − 8:20 =
[R]

c) 7:03 − 5:43 =
[R]

d) 9:26 − 7:12 =
[R]

e) 7:41 − 6:12 =
[R]

f) 11:03 − 9:52 =
[R]

g) 11:30 − 10:14 =
[R]

h) 3:26 − 2:20 =
[R]

i) 10:11 − 8:05 =
[R]

j) 10:20 − 9:08 =
[R]