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Grade 3 - Mathematics
7.5 Elapsed Time

Method:

  1. 4:30 is also read as half past 4. (because 30 minutes makes half an hour)
  2. 4:15 is also read as quarter past 4. (because 15 minutes makes quarter hour)
  3. The elapsed time is the difference between two intervals of time.
Example: The show started at 2.20 pm and ended at 3.45 pm. How long did the show go on?
Start time = 2:20
End time = 3:45
Time elapsed = 3:45 - 2:20 (2:20 to 3:20 is 1 hour, 3:20 to 3:45 is 25 minutes)
1 hour 25 minutes
Answer: 1:25

Directions: Answer the following. Also write at least 10 examples of your own.
Q 1: The airport requests that all passengers report to the airport forty-five minutes before their flight. If Jennifer is taking a 6 o'clock flight. When should she arrive at the airport?
5:00
6:00
5:15
5:45

 Q 2: The concert started at 8 and finished at 10:30. How long did the concert last?
2 hours
2hrs. and 30 minutes
3 hr. and 30 minutes
3 hours

Q 3: Measha woke up at 7 in the morning. After 6 hours she has a dentist appointment. What time does she need to see the dentist?
12:00
1:00
11:00
2:00

 Q 4: It is 3 o'clock. I finished my homework at 6:40. How long did I do homework?
3:30
4:00
4:30
3:40

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 Question 6: This question is available to subscribers only!


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