Convert hours, minutes and seconds

There are 60 minutes in an hour and 60 seconds in a minute.

1. 720 minutes = ___ hours
2. 1200 minutes = ___ hours
3. 1440 minutes = ___ hours
4. 12 hours = ___ minutes
5. 20 minutes = ___ seconds
6. 19 hours = ___ minutes
7. 10 hours = ___ minutes
8. 780 minutes = ___ hours
9. 330 minutes = ___ hours
10. 606 seconds = ___ minutes
11. 9.3 minutes = ___ seconds
12. 216 seconds = ___ minutes
13. 12 hours = ___ seconds
14. 25200 seconds = ___ hours
15. 36000 seconds = ___ hours
16. 2 hours = ___ minutes
17. 690 seconds = ___ minutes
18. 624 seconds = ___ minutes
19. 10.4 hours = ___ minutes
20. 11 hours = ___ seconds