a) 10:33 − 9:06 =
[R]

b) 5:51 − 3:02 =
[R]

c) 7:21 − 3:37 =
[R]

d) 7:05 − 5:16 =
[R]

e) 9:03 − 5:56 =
[R]

f) 4:42 − 2:09 =
[R]

g) 9:00 − 5:16 =
[R]

h) 6:56 − 4:00 =
[R]

i) 10:12 − 6:34 =
[R]

j) 5:17 − 4:12 =
[R]