a) 10:37 − 7:00 =
[R]

b) 4:07 − 1:24 =
[R]

c) 7:07 − 5:30 =
[R]

d) 12:29 − 9:28 =
[R]

e) 3:33 − 1:08 =
[R]

f) 12:01 − 10:00 =
[R]

g) 10:02 − 8:23 =
[R]

h) 11:26 − 8:10 =
[R]

i) 6:08 − 3:32 =
[R]

j) 6:10 − 3:17 =
[R]