a) 9:41 − 7:05 =
[R]

b) 4:16 − 1:10 =
[R]

c) 7:27 − 4:13 =
[R]

d) 6:17 − 3:37 =
[R]

e) 5:05 − 1:50 =
[R]

f) 11:08 − 7:41 =
[R]

g) 4:14 − 2:14 =
[R]

h) 9:38 − 7:20 =
[R]

i) 8:05 − 5:16 =
[R]

j) 5:25 − 2:19 =
[R]