a) 11:15 − 7:29 =
[R]

b) 8:05 − 5:24 =
[R]

c) 11:10 − 7:25 =
[R]

d) 7:01 − 3:52 =
[R]

e) 7:02 − 5:33 =
[R]

f) 10:08 − 8:06 =
[R]

g) 3:36 − 1:09 =
[R]

h) 3:50 − 1:05 =
[R]

i) 10:03 − 7:09 =
[R]

j) 6:02 − 4:54 =
[R]