a) 6:00 − 2:58 =
[R]

b) 9:30 − 8:13 =
[R]

c) 6:09 − 2:30 =
[R]

d) 8:10 − 5:19 =
[R]

e) 11:12 − 9:12 =
[R]

f) 8:39 − 6:06 =
[R]

g) 11:54 − 9:01 =
[R]

h) 5:44 − 2:01 =
[R]

i) 12:30 − 9:08 =
[R]

j) 5:10 − 1:27 =
[R]