a) 3:29 − 1:05 =
[R]

b) 6:00 − 3:05 =
[R]

c) 10:37 − 7:03 =
[R]

d) 12:21 − 10:12 =
[R]

e) 9:33 − 6:08 =
[R]

f) 11:27 − 9:02 =
[R]

g) 9:18 − 7:01 =
[R]

h) 11:17 − 9:32 =
[R]

i) 2:46 − 1:03 =
[R]

j) 3:32 − 2:20 =
[R]