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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: Mark started on his Math homework at 4 and finished at 4:20. How long did he take to finish his homework?
thirty minutes
four minutes
four hours
twenty minutes

 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 hours
3 hr. and 30 minutes

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?
11:00
12:00
1:00
2:00

 Q 4: 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?
5:45
5:00
6:00
5:15

Q 5: The bell rings at 8. The class starts 25 minutes after the bell rings. When does the class start?
8:15
8:20
8:30
8:25

 Q 6: Mr. Dan started cooking at 12. He finished cooking at 2:20. How long did he cook?
2:20
2:10
1:00
5:00

Q 7: I started jogging at 6 o'clock. I finished at 6:45. How long did I jogged.
30 minutes
1 hour and 10 minutes
45 minutes
1 hour

 Q 8: Mr. Jones walks to work every morning. It takes him twenty minutes to get to work. He must be to work by 9. When should he start?
8:30 am
8:40 am
8:35 am
8:45 am

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 Question 10: This question is available to subscribers only!


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