a) 7:19 − 3:29 =
[R]

b) 10:45 − 7:10 =
[R]

c) 10:05 − 7:22 =
[R]

d) 9:07 − 7:41 =
[R]

e) 10:45 − 7:11 =
[R]

f) 7:13 − 5:28 =
[R]

g) 10:07 − 6:40 =
[R]

h) 11:03 − 8:39 =
[R]

i) 5:14 − 2:06 =
[R]

j) 10:36 − 8:19 =
[R]