Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
Are you ready to take this lesson's quiz? These questions will help you find out. Go back to the lesson if you do not know an answer.
1. The time is 9 o’clock. What would be the time 3 hours earlier?
- 12 o’clock
- 6 o’clock
- 7 o’clock
Sorry, that is incorrect. To find an earlier time, we subtract. 9 o’clock minus 3 hours is 6 o’clock.
Way to go! To find an earlier time, we subtract. 9 o’clock minus 3 hours is 6 o’clock.
Sorry, that is incorrect. To find an earlier time, we subtract. 9 o’clock minus 3 hours is 6 o’clock.
2. What time would be 2 hours earlier than the time on the clock?
- 2:30
- 4:00
- 12:00
Sorry, that is incorrect. To find an earlier time, we subtract. 2 o’clock minus 2 hours is 12 o’clock.
Sorry, that is incorrect. To find an earlier time, we subtract. 2 o’clock minus 2 hours is 12 o’clock.
Excellent! To find an earlier time, we subtract. 2 o’clock minus 2 hours is 12 o’clock.
3. It is 7:45. What would be the time 15 minutes later?
- 7:40
- 7:30
- 8:00
Sorry, that is incorrect. To find the later time, we must add 15 minutes to the time. It is 8:00!
Sorry, that is incorrect. To find the later time, we must add 15 minutes to the time. It is 8:00!
Great job! To find the later time, we must add 15 minutes to the time. It is 8:00!
4. What time would be 2 hours later than the time on the clock?
- 7:00
- 6:00
- 5:00
Fantastic! To find the later time, we add. 5 o’clock plus 2 hours is 7 o’clock.
Sorry, that is incorrect. To find the later time, we add. 5 o’clock plus 2 hours is 7 o’clock.
Sorry, that is incorrect. To find the later time, we add. 5 o’clock plus 2 hours is 7 o’clock.
5. What time would be 2 hours earlier than the time on the clock?
- 10 o’clock
- 9 o’clock
- 1 o’clock
Sorry, that is incorrect. To find the earlier time, we subtract. 11 o’clock minus 2 hours is 9 o’clock.
Way to go! To find the earlier time, we subtract. 11 o’clock minus 2 hours is 9 o’clock.
Sorry, that is incorrect. To find the earlier time, we subtract. 11 o’clock minus 2 hours is 9 o’clock.
6. It is 3:15. What would be the time 15 minutes later?
- half past 3 o’clock
- 3 o’clock
- half past 4 o’clock
That is correct! To find the later time, we must add 15 minutes to the time. It is 3:30, or half past 3 o’clock!
Sorry, that is incorrect. To find the later time, we must add 15 minutes to the time. It is 3:30, or half past 3 o’clock!
Sorry, that is incorrect. To find the later time, we must add 15 minutes to the time. It is 3:30, or half past 3 o’clock!
7. What time would be 1 hour later than the time on the clock?
- 3:39
- 4:15
- 3:15
Sorry, that is incorrect. To find the later time, we add. 2:15 plus 1 hour is 3:15.
Sorry, that is incorrect. To find the later time, we add. 2:15 plus 1 hour is 3:15.
Excellent! To find the later time, we add. 2:15 plus 1 hour is 3:15.
8. What time would be 1 hour earlier than the time on the clock?
- 9:10
- 6:10
- 7:10
Sorry, that is incorrect. To find the earlier time, we subtract. 8:10 minus 1 hour is 7:10.
Sorry, that is incorrect. To find the earlier time, we subtract. 8:10 minus 1 hour is 7:10.
That is correct! To find the earlier time, we subtract. 8:10 minus 1 hour is 7:10.
9. What time would be 2 hours later than the time on the clock?
- 9:30
- 8:30
- 7:30
Sorry, that is incorrect. To find the later time, we add. 6:30 plus 2 hours is 8:30, or half past 8 o’clock.
Great job! To find the later time, we add. 6:30 plus 2 hours is 8:30, or half past 8 o’clock.
Sorry, that is incorrect. To find the later time, we add. 6:30 plus 2 hours is 8:30, or half past 8 o’clock.
10. It is 4 o’clock. What would be the time 3 hours earlier?
- 1 o’clock
- 2 o’clock
- 3 o’clock
Fantastic! To find the earlier time, we subtract. 4 o’clock minus 3 hours is 1 o’clock.
Sorry, that is incorrect. To find the earlier time, we subtract. 4 o’clock minus 3 hours is 1 o’clock.
Sorry, that is incorrect. To find the earlier time, we subtract. 4 o’clock minus 3 hours is 1 o’clock.
Summary
Questions answered correctly:
Questions answered incorrectly: