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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: Your uncle and aunt have come to visit for the day! They arrive at 9 o'clock. They went back at 7:30. How long did they stay?ten and a half hourseleven hourseleven and a half hoursten hours Q 2: It is 3 o'clock. I finished my homework at 6:40. How long did I do homework?4:304:003:303:40 Question 3: This question is available to subscribers only! Question 4: This question is available to subscribers only!