a) 5:16 − 2:07 =
[R]

b) 4:22 − 3:06 =
[R]

c) 7:04 − 5:37 =
[R]

d) 11:23 − 8:18 =
[R]

e) 7:01 − 5:36 =
[R]

f) 11:02 − 9:55 =
[R]

g) 7:21 − 5:08 =
[R]

h) 8:14 − 7:00 =
[R]

i) 12:31 − 9:15 =
[R]

j) 10:00 − 7:49 =
[R]