a) 5:49 − 3:01 =
[R]

b) 7:06 − 3:38 =
[R]

c) 5:08 − 3:39 =
[R]

d) 9:22 − 5:30 =
[R]

e) 3:31 − 2:18 =
[R]

f) 7:19 − 5:32 =
[R]

g) 3:15 − 2:13 =
[R]

h) 4:21 − 1:30 =
[R]

i) 8:22 − 5:04 =
[R]

j) 9:25 − 6:04 =
[R]