a) 9:08 − 7:13 =
[R]

b) 4:46 − 3:12 =
[R]

c) 8:24 − 5:00 =
[R]

d) 5:10 − 3:45 =
[R]

e) 5:05 − 1:54 =
[R]

f) 12:29 − 9:20 =
[R]

g) 7:01 − 3:34 =
[R]

h) 10:33 − 8:26 =
[R]

i) 10:38 − 7:03 =
[R]

j) 6:37 − 5:03 =
[R]