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### Grade 3 - Mathematics7.5 Elapsed Time

 Method: 4:30 is also read as half past 4. (because 30 minutes makes half an hour) 4:15 is also read as quarter past 4. (because 15 minutes makes quarter hour) 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: Mom must leave the conditioner on her hair for 10 minutes. She put the conditioner on at 1:30. At what time should she wash off.1:451:402:002:30 Q 2: 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?12:0011:001:002:00 Q 3: I started jogging at 6 o'clock. I finished at 6:45. How long did I jogged.45 minutes1 hour1 hour and 10 minutes30 minutes Q 4: Mr. Dan started cooking at 12. He finished cooking at 2:20. How long did he cook?2:101:005:002:20 Q 5: It is 3 o'clock. I finished my homework at 6:40. How long did I do homework?4:003:303:404:30 Q 6: Mike played basketball for 3 and 1/2 hours. He started at 6. When did he finish?9:308:307:0010:00 Q 7: The concert started at 8 and finished at 10:30. How long did the concert last?3 hours3 hr. and 30 minutes2 hours2hrs. and 30 minutes Q 8: Jacob finished his homework after working on it for thirty-five minutes. He started at 4:15. What time did he complete his homework?5:104:454:554:50 Question 9: This question is available to subscribers only! Question 10: This question is available to subscribers only!