a) 8:45 − 6:00 =
[R]

b) 9:08 − 6:39 =
[R]

c) 8:32 − 5:17 =
[R]

d) 5:50 − 3:06 =
[R]

e) 10:33 − 8:08 =
[R]

f) 4:34 − 1:23 =
[R]

g) 10:46 − 8:08 =
[R]

h) 10:30 − 9:05 =
[R]

i) 4:17 − 1:16 =
[R]

j) 9:00 − 7:25 =
[R]