Comprehensive guide for Cambridge Primary Mathematics Grade 3 . Practice calendar reading and time

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Grade 3 Unit 14.2: Time Intervals & 24-Hour Mastery | Jawad ul Manzoor Foundation

Grade 3 Unit 14.2: Time Mastery

This interactive worksheet covers Cambridge Primary Mathematics Grade 3 Learner's Book Unit 14.2. Learn how to calculate durations, use start/end times, and master digital/analog conversions.

Time Calculation Secrets:

  • Finding Duration: Count the minutes from the start time to the next hour, then add the remaining minutes. (Example: 2:45 to 3:15 is 15 mins + 15 mins = 30 mins).
  • The 60-Minute Rule: Never write "65 minutes." Convert it to "1 hour 5 minutes." Remember: 60 minutes = 1 hour.
  • Digital vs Analog: Digital time shows hours:minutes. "Half past 4" is 4:30. "Quarter to 6" is 5:45.
  • AM and PM: AM is morning (midnight to noon). PM is afternoon/evening (noon to midnight).
Digital Time Cheat Sheet
WordsDigital
Quarter past 808:15
Half past 808:30
Quarter to 908:45
10 past 202:10
20 to 403:40
Units of Time Recall
1 Minute60 Seconds
1 Hour60 Minutes
Quarter Hour15 Minutes
Half Hour30 Minutes
Three-Quarters45 Minutes
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