a) 9:13 − 7:35 =
[R]

b) 9:05 − 5:13 =
[R]

c) 5:25 − 3:32 =
[R]

d) 10:47 − 7:03 =
[R]

e) 9:20 − 7:33 =
[R]

f) 7:46 − 6:03 =
[R]

g) 3:07 − 2:05 =
[R]

h) 8:02 − 6:14 =
[R]

i) 4:22 − 2:18 =
[R]

j) 8:04 − 6:11 =
[R]