a) 5:27 − 3:19 =
[R]

b) 12:00 − 9:02 =
[R]

c) 11:40 − 8:04 =
[R]

d) 10:04 − 8:25 =
[R]

e) 7:10 − 5:38 =
[R]

f) 5:06 − 3:13 =
[R]

g) 6:14 − 3:11 =
[R]

h) 11:08 − 8:14 =
[R]

i) 7:08 − 3:40 =
[R]

j) 7:15 − 3:44 =
[R]