Understanding Time Calculations

The video tutorial covers the concept of elapsed time, explaining how to solve problems by converting units of time using multiplication or division. It provides examples of converting minutes to hours, calculating weeks and days, and using number lines to find elapsed time. The tutorial also emphasizes the importance of understanding AM and PM in time calculations. Additionally, it demonstrates how to find start and end times using clocks and calculates the number of minutes and seconds in hours. The video concludes with a transition to the next chapter on geometry.

What is elapsed time?

• The time between the start and end of an activity.

• The time it takes to complete a task.

• The time shown on a clock.

• The time it takes to travel a distance.

How can we solve elapsed time problems?

• By guessing the time.

• By using a calendar.

• By using a stopwatch.

• By converting units of time.

Which tools can be used to solve elapsed time problems?

• A stopwatch and a timer.

• A digital clock and a calendar.

• A table of units, a number line, and an analog clock.

• A calculator and a ruler.

How many hours and minutes are in 320 minutes?

• 5 hours and 20 minutes

• 6 hours and 0 minutes

• 4 hours and 40 minutes

• 5 hours and 0 minutes

How many weeks and days are in 25 days?

• 3 weeks and 4 days

• 3 weeks and 5 days

• 4 weeks and 1 day

• 2 weeks and 5 days

If a movie starts at 1:30 p.m. and lasts 2 hours and 10 minutes, what time does it end?

• 3:30 p.m.

• 3:40 p.m.

• 4:00 p.m.

• 4:10 p.m.

If someone sleeps from 10:00 p.m. for 9 hours, what time do they wake up?

• 5:00 a.m.

• 8:00 a.m.

• 6:00 a.m.

• 7:00 a.m.

What does AM stand for?

• Ante-Meridian

• After Midday

• Anti-Meridian

• After Midnight

What does PM stand for?

• Post-Meridian

• Pre-Midnight

• Post-Midnight

• Pre-Meridian

If the start time is 2:25 p.m. and the elapsed time is 1 hour 30 minutes, what is the end time?

• 3:55 p.m.

• 4:00 p.m.

• 3:45 p.m.

• 4:25 p.m.