Elapsed Time Calculations

The video tutorial covers the concept of elapsed time, demonstrating how to calculate the time after a specific event and the duration between two events. It includes examples such as determining the time three hours after 6:30 a.m., calculating the time Jeff spent on his homework, and finding the flight duration from New York to Miami. The tutorial emphasizes using addition for future times and subtraction for elapsed time between events.

What is the main focus of elapsed time problems?

• Finding the time between two events

• Determining the speed of an object

• Measuring the weight of an object

• Calculating the distance between two places

If it is 6:30 a.m. now, what time will it be 3 hours later?

• 10:30 a.m.

• 8:30 a.m.

• 9:00 a.m.

• 9:30 a.m.

How do you calculate the time 3 hours after a given time?

• Divide the given time by 3

• Multiply the given time by 3

• Add 3 hours to the given time

• Subtract 3 hours from the given time

What is the elapsed time between 6:30 a.m. and 9:30 a.m.?

• 3 hours

• 2 hours

• 4 hours

• 5 hours

Jeff started his homework at 7:21 p.m. and finished at 8:40 p.m. How long did he work?

• 2 hours

• 1 hour and 10 minutes

• 1 hour and 30 minutes

• 1 hour and 19 minutes

What is the first step in finding the elapsed time between two events?

• Divide the later time by the earlier time

• Multiply the two times

• Add the two times together

• Subtract the earlier time from the later time

If Jeff started his homework at 7:21 p.m., what time would it be 1 hour and 19 minutes later?

• 8:50 p.m.

• 9:00 p.m.

• 8:40 p.m.

• 8:30 p.m.

What is the elapsed time between 7:21 p.m. and 8:40 p.m.?

• 2 hours

• 1 hour and 30 minutes

• 1 hour and 19 minutes

• 1 hour and 10 minutes

How do you verify the elapsed time calculation?

• By adding the elapsed time to the start time and checking if it matches the end time

• By subtracting the elapsed time from the end time

• By multiplying the elapsed time by the start time

• By dividing the elapsed time by the end time

A plane landed in Miami at 4:47 p.m. after departing from New York at 2:15 p.m. How long was the flight?

• 1 hour and 47 minutes

• 2 hours and 32 minutes

• 2 hours and 15 minutes

• 3 hours