a) 5:00 − 3:35 =
[R]

b) 6:14 − 3:21 =
[R]

c) 7:34 − 6:02 =
[R]

d) 6:11 − 3:48 =
[R]

e) 5:19 − 2:15 =
[R]

f) 12:47 − 10:05 =
[R]

g) 5:00 − 3:06 =
[R]

h) 8:14 − 4:29 =
[R]

i) 11:14 − 8:39 =
[R]

j) 8:11 − 5:39 =
[R]