Elapsed Time Calculation Methods

The video tutorial introduces the concept of elapsed time, explaining how to calculate it using both the number line and subtraction methods. It also covers estimating elapsed time by rounding. Several examples are provided to illustrate these methods, including real-life scenarios. The tutorial concludes with a summary of the key concepts and methods discussed.

What is the main focus of today's lesson?

• Studying historical events

• Exploring geometric shapes

• Understanding fractions and decimals

• Learning about elapsed time and estimating time duration

What is elapsed time?

• The time taken to complete a task

• The time from the start to the end of an event

• The time spent on a break

• The time taken to travel

In the example, what is the elapsed time from 9:00 AM to 9:30 AM?

• 20 minutes

• 40 minutes

• 50 minutes

• 30 minutes

How many minutes are there in one hour?

• 30 minutes

• 90 minutes

• 60 minutes

• 45 minutes

What does 'AM' stand for?

• After Midnight

• Ante Meridian

• Ante Midnight

• After Meridian

What is the first method to find elapsed time?

• Using a calculator

• Using a number line

• Using a calendar

• Using a stopwatch

How many minutes are there from 7:32 AM to 8:25 AM using the number line method?

• 45 minutes

• 50 minutes

• 53 minutes

• 60 minutes

What is the second method to find elapsed time?

• Division

• Subtraction

• Multiplication

• Addition

What is the estimated elapsed time for cleaning from 7:32 AM to 8:25 AM?

• 45 minutes

• 50 minutes

• 1 hour and 5 minutes

• 1 hour

How long did Alison and her mother wash clothes?

• 41 minutes

• 50 minutes

• 60 minutes

• 30 minutes