a) 5:47 − 2:10 =
[R]

b) 6:03 − 3:49 =
[R]

c) 5:41 − 4:12 =
[R]

d) 12:09 − 10:30 =
[R]

e) 12:14 − 10:45 =
[R]

f) 12:20 − 9:33 =
[R]

g) 8:21 − 4:33 =
[R]

h) 6:02 − 4:34 =
[R]

i) 12:12 − 11:03 =
[R]

j) 12:01 − 10:25 =
[R]