Elapsed Time Calculations

The video tutorial teaches students how to calculate and estimate elapsed time. It introduces the concept of elapsed time, explains how to use a number line and subtraction to find it, and provides examples for practice. The tutorial also covers estimating elapsed time by rounding and includes various scenarios to reinforce learning.

What is the definition of elapsed time?

• The time between two different days.

• The time it takes to complete a task.

• The time it takes to travel a certain distance.

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

What does 'AM' stand for?

• After Meridian

• Ante Meridian

• After Midnight

• Ante Midnight

How many minutes are there in one hour?

• 30 minutes

• 45 minutes

• 60 minutes

• 90 minutes

Using the number line method, how many minutes are there from 7:32 AM to 7:45 AM?

• 15 minutes

• 10 minutes

• 20 minutes

• 13 minutes

When using subtraction to find elapsed time, what should you do if the minutes in the end time are smaller than the start time?

• Subtract an hour from the start time

• Borrow an hour from the end time

• Add an hour to the end time

• Add 60 minutes to the start time

What is the estimated elapsed time if the start time is 7:32 AM and the end time is 8:25 AM?

• 1 hour and 5 minutes

• 45 minutes

• 1 hour

• 53 minutes

If the start time is 4:28 PM and the end time is 5:09 PM, what is the exact elapsed time?

• 41 minutes

• 45 minutes

• 50 minutes

• 55 minutes

How do you estimate elapsed time by rounding off minutes?

• Round both times to the nearest 10 minutes

• Round both times to the nearest 15 minutes

• Round both times to the nearest 5 minutes

• Round both times to the nearest hour

What should you do when calculating elapsed time across AM and PM?

• Subtract 12 hours from the end time

• Add 12 hours to the start time

• Subtract 12 hours from the start time

• Add 12 hours to the end time

If Chris works from 10 AM to 1 PM, how many hours does he work?

• 2 hours

• 3 hours

• 4 hours

• 5 hours