Class 3 (CBSE) • MathematicsChapter 13: Time Goes On⭐ Topic 2
Calculating Duration
Duration means how much time passes between a start time and an end time, and we learn to calculate it.
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To find duration, we subtract the start time from the end time - for example, if a movie starts at 3:00 and ends at 5:00, the duration is 2 hours.
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Remember these!
- Duration is the time between a start and end time.
- We subtract start time from end time to find duration.
- 3:00 to 5:00 is 2 hours duration.
- 3:15 to 5:45 is 2 hours 30 minutes.
- We can count forward to calculate duration too.
- Duration helps us plan our day.
- Knowing duration helps estimate how long activities take.
- Practice makes duration calculation easier.
Words to know
calculating duration