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  • 1. Learning Target:Students will learn how to add or subtract measures of time and solve real life problems by computing and understanding elapsed time.
  • 2. Relationships between units of time:1 hour (h) = 60 minutes (min)1 minute (min) = 60 seconds (sec)
  • 3. Add or subtract the measures of time.3 min 26 sec+ 1 min 40 sec a4 min 16 sec- 2 min 18 sec s
  • 4. Add or subtract the measures of time.3 min 26 sec+ 1 min 40 sec a5 min 6 sec4 min 16 sec- 2 min 18 sec s1 min 58 sec
  • 5. Add or subtract the measures of time.5 h 29 min 8 sec+ 2 h 45 min 33sec d6 h 32 min 27 sec- 4 h 1 min 45 sec s
  • 6. Add or subtract the measures of time.5 h 29 min 8 sec+ 2 h 45 min 33sec d8 h 14 min 41 sec6 h 32 min 27 sec- 4 h 1 min 45 sec s2 h 30 min 42 sec
  • 7. The amount of time between a start time and an end time is calledelapsed time.Why is it important to understand elapsed time?
  • 8. Find the elapsed time.A. 6:00 A.M. to 11:00 A.M.B. 7:30 A.M to 11:45 A.M.C. 11:45 A.M. to 2:15 P.MD. 8:50 P.M to 3:30 A.M.
  • 9. Find the elapsed time.A. 6:00 A.M. to 11:00 A.M.5 hoursB. 7:30 A.M to 11:45 A.M.4 hours 15 minC. 11:45 A.M. to 2:15 P.M2 hours 30 minD. 8:50 P.M to 3:30 A.M.6 hours 40 min
  • 10. Your bus leaves Glenwood Station at 9:23 A.M. and arrives at Part Station at 10:08 A.M. How long is the bus ride?
  • 11. Your bus leaves Glenwood Station at 9:23 A.M. and arrives at Part Station at 10:08 A.M. How long is the bus ride?45 min
  • 12. A seed planted at 6:30 A.M. sprouts at 7:14 P.M. Find the elapsed time.
  • 13. A seed planted at 6:30 A.M. sprouts at 7:14 P.M. Find the elapsed time.12 hours 44 min.
  • 14. Can you add or subtract measures of time and solve real life problems by computing and understanding elapsed time?

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