a) 4:26 − 1:11 =
[R]

b) 10:11 − 8:16 =
[R]

c) 10:19 − 9:13 =
[R]

d) 10:19 − 9:03 =
[R]

e) 2:28 − 1:21 =
[R]

f) 12:25 − 9:24 =
[R]

g) 8:02 − 6:35 =
[R]

h) 8:24 − 7:07 =
[R]

i) 7:05 − 4:43 =
[R]

j) 3:08 − 1:23 =
[R]