Elapsed time

Key Notes :

What is Elapsed Time?

  • Elapsed time is the amount of time that passes from the start to the end of an event.

Telling Time Basics

  • Know how to read a clock:
    🕒 Hour hand (short hand)
    🕔 Minute hand (long hand)

Units of Time

  • 1 hour = 60 minutes
  • 30 minutes = half an hour
  • 15 minutes = quarter of an hour

Finding Elapsed Time

  • Use a start time and end time to figure out how much time has passed.
    Example: From 2:00 to 3:00 = 1 hour

Strategies to Find Elapsed Time

  • Use a number line or timeline
  • Count by hours, then by minutes
  • Use clock drawings or actual clocks

Practice Examples

  • If a movie starts at 4:00 and ends at 5:30, how much time passed?
    ➤ 1 hour and 30 minutes

Real-Life Situations

  • Elapsed time helps us understand things like:
    ⏰ How long a class lasts
    🍽️ Cooking time
    🎮 Play time

Important Vocabulary

  • Start time: when something begins
  • End time: when it ends
  • Elapsed time: how much time passed between start and end

Learn with an example

🎯 It is now two o’clock. What time will it be in 4 hours?

Write your answer using numbers and a colon (for example, 11:58).

  • Two o’clock means 2:00.
  • Count by hours to find 4 hours after 2:00. This is 6:00.
  • It will be 6:00.

🎯 Look at this clock:


🎯 What time will it be in seven hours?

Write your answer using numbers and a colon (for example, 11:58).

  • Read the time on the clock. It is 1:00.
  • Count by hours to find 7 hours after 1:00. This is 8:00.
  • It will be 8:00.

🎯 It is now four o’clock. What time will it be in four hours?

Write your answer using numbers and a colon (for example, 11:58).

  • Four o’clock means 4:00.
  • Count by hours to find 4 hours after 4:00. This is 8:00.
  • It will be 8:00.

Let’s practice!🖊️