- A person who slept for 8 hours woke up at 6:30 a.m. When did he go to sleep?
- A person who slept for 9 hours woke up at 9:00 a.m. When did he go to sleep?
- A person who slept for 7 hours woke up at 5:45 a.m. When did he go to sleep?
- A person who slept for 11 hours woke up at 8:30 a.m. When did he go to sleep?
- A person who slept for 6 hours woke up at 10:00 a.m. When did he go to sleep?
- A person who slept for 10 hours woke up at 7:00 a.m. When did he go to sleep?
- Find the elapsed time from 9:55 a.m. to 2:45 p.m.
- Find the elapsed time from 10:30 a.m. to 3:45 p.m.
- Find the elapsed time from 12:00 p.m. to 6:30 p.m.
- Find the elapsed time from 1:45 p.m. to 9:00 p.m.
- Find the elapsed time from 4:20 a.m. to 11:55 a.m.
- Find the elapsed time from 8:00 a.m. to 7:30 p.m.
