a) 9:34 − 6:20 =
[R]

b) 3:01 − 1:22 =
[R]

c) 5:39 − 2:15 =
[R]

d) 3:10 − 1:16 =
[R]

e) 4:44 − 1:08 =
[R]

f) 11:13 − 7:19 =
[R]

g) 8:06 − 5:50 =
[R]

h) 11:12 − 8:18 =
[R]

i) 9:18 − 7:12 =
[R]

j) 5:01 − 3:20 =
[R]