a) 7:09 − 6:05 =
[R]

b) 4:18 − 3:06 =
[R]

c) 9:10 − 5:37 =
[R]

d) 11:06 − 9:47 =
[R]

e) 11:18 − 7:33 =
[R]

f) 8:47 − 7:07 =
[R]

g) 5:04 − 2:05 =
[R]

h) 6:22 − 3:05 =
[R]

i) 9:15 − 7:11 =
[R]

j) 11:12 − 8:28 =
[R]