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Time Calculations
AddingTimeMinutes bigger than 60c. Add 2 h and 35 min and 1 h and 40 min.           2:35			2:351:401:40             :75		        4:15:604:15+1++-The total is 4 h and 15 min.
How long?/At what time? How long is your math class?Answer is hours and minutes.At what time did your math class start today?Answer is a time of dayam / pm
How long…..Elapsed timeAn exam starts at 8:00 am and finishes at 1:30 pm. How long does the exam take?Change everything to 24 hour time. Then subtract.FINISH TimeSTART Timeminus13:20  -  8:00 = 5 hours 20 minutes The length between 8:00am and 1:30pm is 5 hours 20 minutes
Finding Start TimeAn exam finishes at 11:45 am. The exam is 2 hours 30 minutes long.  What time did the exam start?Change everything to 24 hour time. Then subtract.FINISH TimeHow longminus11:45  -  2:30 = 9:15The start time of the exam was 9:15 am
Finding Finish TimeAn exam starts at 10:15 am. The exam is 3 hours 30 minutes long.  What time did the exam finish?Change everything to 24 hour time. Then add.How longSTART Timeplus10:15  +  3:30 = 13:45   ::: 1:45 pmThe finish time of the exam was 1:45 pm
Time ZonesHow many hours difference compared to the UAE?Is the time earlier or later?
Finding the Time in Another CountryRule:If the country we want is…lateraddTimedifferenceearliersubtract
Finding the Time in Another Countrya. It is 5:00 pm in the UAE. What is the time in Pakistan?
How to Find the Time in the UAEThe time in Jamaica is 11:00 am. What is the time in the UAE?From the table, CHANGE the UAE is 9 hours later than Jamaica.STEP 1STEP 2

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Module 7 Summary

  • 2. AddingTimeMinutes bigger than 60c. Add 2 h and 35 min and 1 h and 40 min. 2:35 2:351:401:40 :75 4:15:604:15+1++-The total is 4 h and 15 min.
  • 3. How long?/At what time? How long is your math class?Answer is hours and minutes.At what time did your math class start today?Answer is a time of dayam / pm
  • 4. How long…..Elapsed timeAn exam starts at 8:00 am and finishes at 1:30 pm. How long does the exam take?Change everything to 24 hour time. Then subtract.FINISH TimeSTART Timeminus13:20 - 8:00 = 5 hours 20 minutes The length between 8:00am and 1:30pm is 5 hours 20 minutes
  • 5. Finding Start TimeAn exam finishes at 11:45 am. The exam is 2 hours 30 minutes long. What time did the exam start?Change everything to 24 hour time. Then subtract.FINISH TimeHow longminus11:45 - 2:30 = 9:15The start time of the exam was 9:15 am
  • 6. Finding Finish TimeAn exam starts at 10:15 am. The exam is 3 hours 30 minutes long. What time did the exam finish?Change everything to 24 hour time. Then add.How longSTART Timeplus10:15 + 3:30 = 13:45 ::: 1:45 pmThe finish time of the exam was 1:45 pm
  • 7. Time ZonesHow many hours difference compared to the UAE?Is the time earlier or later?
  • 8. Finding the Time in Another CountryRule:If the country we want is…lateraddTimedifferenceearliersubtract
  • 9. Finding the Time in Another Countrya. It is 5:00 pm in the UAE. What is the time in Pakistan?
  • 10. How to Find the Time in the UAEThe time in Jamaica is 11:00 am. What is the time in the UAE?From the table, CHANGE the UAE is 9 hours later than Jamaica.STEP 1STEP 2