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# Elapsed Time

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### Elapsed Time

1. 1. ELAPSED TIME THE “2 T-CHARTS” METHOD
2. 2. SAMPLE PROBLEM JOSEPH LEFT HOME AT THE TIME SHOWN ON THE CLOCKBELOW. HE RETURNED HOME AT 4:08 P.M. HOW LONG WAS HE AWAY FROM HOME? 9:57 A.M.
3. 3. SETTING UP THE PROBLEM AFTER READING THE PROBLEM, IDENTIFY THEINFORMATION YOU ARE GIVEN IN THE PROBLEM.START TIME: 9:57 A.M.END TIME: 4:08 P.M.ELAPSED TIME: ???
4. 4. CREATE 2 T-CHARTS START TIME: 9:57 A.M. END TIME: 4:08 P.M. ELAPSED TIME: ???*DRAW 2 T-CHARTS: ONE TO REPRESENT HOURS, THE OTHER TO REPRESENT MINUTES. HOURS MINUTES
5. 5. FILL IN THE T-CHARTSSTART TIME: 9:57 A.M. 1. ADD 1 HOUR AT A TIME. GET ASEND TIME: 4:08 P.M. CLOSE TO THE END TIME AS POSSIBLEELAPSED TIME: ??? WITHOUT GOING OVER! START 9:57 HOURS MINUTES TIME 10:57 1 11:57 1 12:57 1 1:57 1 2:57 1 3:57 1
6. 6. FILL IN THE T-CHARTS 2. NOW ADD THE MINUTES. ADD 10START TIME: 9:57 A.M. MINUTES AT A TIME TO SPEED UP THEEND TIME: 4:08 P.M. PROCESS. THEN, ADD THE NUMBERELAPSED TIME: ??? NEEDED TO ARRIVE AT THE END TIME. 9:57 HOURS 3:57 MINUTES 10:57 1 4:07 10 11:57 1 4:08 1 12:57 1 1:57 1 2:57 1 3:57 1
7. 7. ADD UP THE HOURS AND MINUTESSTART TIME: 9:57 A.M. 3. ADD UP THE HOURS AND MINUTESEND TIME: 4:08 P.M. FROM THE RIGHT SIDE OF THE T-CHARTELAPSED TIME: ??? TO CALCULATE ELAPSED TIME. 9:57 HOURS 3:57 MINUTES 10:57 1 4:07 10 11:57 1 4:08 1 12:57 1 11 MINUTES 1:57 1 2:57 1 3:57 1 ELAPSED TIME= 6 HOURS AND 11 MIN. 6 HOURS
8. 8. SAMPLE PROBLEM #2 EMMA WENT TO A MOVIE THATSTARTED AT 1:17 P.M. IT WAS 2 HOURS AND 56 MINUTES LONG. WHEN DID THE MOVIE END?
9. 9. SET UP THE T-CHARTSSTART TIME: 1:17 P.M.END TIME: ??ELAPSED TIME: 2 HOURS AND 56 MINUTES START TIME 1:17 HOURS MINUTES
10. 10. ADD THE HOURSSTART TIME: 1:17 P.M.END TIME: ??ELAPSED TIME: 2 HOURS AND 56 MINUTESSTART TIME 1:17 HOURS MINUTES 2:17 1 3:17 1 1. ADD TWO HOURS
11. 11. ADD THE MINUTESSTART TIME: 1:17 P.M.END TIME: ??ELAPSED TIME: 2 HOURS AND 56 MINUTES 1:17 HOURS 3:17 MINUTES 2:17 1 3:27 10 3:17 1 3:37 10 3:47 10 3:57 10 4:07 10 4:13 6 2. NOW ADD THE MINUTES.
12. 12. THE END TIMESTART TIME: 1:17 P.M.END TIME: ??ELAPSED TIME: 2 HOURS AND 56 MINUTES 1:17 HOURS 3:17 MINUTES 2:17 1 3:27 10 3:17 1 3:37 10 3:47 10 3:57 10 4:07 10 4:13 6 THE END TIME = 4:13 P.M.
13. 13. SAMPLE PROBLEM #3 JACK TOOK A RODE TRIP TO FLAGSTAFF. HE LEFT HIS HOUSE AT10:32 A.M. HE ARRIVED IN FLAGSTAFFAT 3:06 P.M. HOW LONG WAS HIS TRIP?
14. 14. SET UP THE T-CHARTSSTART TIME: 10:32 A.M.END TIME: 3:06 P.M.ELAPSED TIME: ??? START TIME 10:32 HOURS MINUTES
15. 15. ADD THE HOURSSTART TIME: 10:32 A.M.END TIME: 3:06 P.M.ELAPSED TIME: ??? 10:32 HOURS MINUTES 11:32 1 12:32 1 1:32 1 2:32 1
16. 16. ADD THE MINUTESSTART TIME: 10:32 A.M.END TIME: 3:06 P.M.ELAPSED TIME: ??? 10:32 HOURS 2:32 MINUTES 11:32 1 2:42 10 12:32 1 2:52 10 1:32 1 3:02 10 2:32 1 3:06 4
17. 17. FIND THE TOTAL HRS. AND MINS.START TIME: 10:32 A.M.END TIME: 3:06 P.M.ELAPSED TIME: ??? 10:32 HOURS 2:32 MINUTES 11:32 1 2:42 10 12:32 1 2:52 10 1:32 1 3:02 10 2:32 1 3:06 4 4 34 ELAPSED TIME= 4 HOURS AND 34 MIN.