a) 9:44 − 7:09 =
[R]

b) 10:08 − 6:20 =
[R]

c) 11:33 − 9:12 =
[R]

d) 4:32 − 3:19 =
[R]

e) 3:39 − 2:17 =
[R]

f) 4:47 − 3:06 =
[R]

g) 4:00 − 2:54 =
[R]

h) 7:02 − 4:25 =
[R]

i) 3:19 − 1:34 =
[R]

j) 4:19 − 1:12 =
[R]