a) 6:22 − 5:10 =
[R]

b) 4:22 − 2:30 =
[R]

c) 9:37 − 6:14 =
[R]

d) 9:10 − 6:49 =
[R]

e) 7:03 − 4:48 =
[R]

f) 5:04 − 2:12 =
[R]

g) 7:00 − 5:00 =
[R]

h) 10:22 − 9:20 =
[R]

i) 10:25 − 8:00 =
[R]

j) 10:25 − 7:06 =
[R]