Class 4 (ICSE) • MathematicsChapter 7: Time - Duration and Calculation⭐ Topic 1
Time - Duration and Calculation
Calculating time duration means finding how much time has passed between a start time and an end time, an important daily life skill.
1
Know it
Step 1 of 3
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See the pattern
Step 2 of 3
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Try it out
Step 3 of 3
Fun picture
Try it now
Learn the idea step by step
1
Know it
To find duration, we calculate the difference between the start time and the end time, often in hours and minutes.
2
See the pattern
For example, if a movie starts at 3:00 PM and ends at 5:30 PM, the duration is 2 hours and 30 minutes.
Quick revision
Remember these!
- Duration is the time passed between start and end.
- We calculate duration in hours and minutes.
- A movie from 3:00 to 5:30 PM lasts 2 hours 30 minutes.
- Duration helps us know how long activities take.
- We use duration for classes, journeys and activities.
- Practice helps us manage our time.
- Duration calculations use subtraction of times.
- This is an important daily life skill.
Words to know
time - duration and calculation