a) 5:01 − 1:10 =
[R]

b) 11:13 − 10:03 =
[R]

c) 7:17 − 4:34 =
[R]

d) 3:38 − 1:15 =
[R]

e) 12:00 − 10:06 =
[R]

f) 8:01 − 4:20 =
[R]

g) 9:07 − 6:41 =
[R]

h) 5:33 − 4:14 =
[R]

i) 6:22 − 4:15 =
[R]

j) 5:43 − 2:15 =
[R]