Elapsed time

Front

What is elapsed time?

Back

Elapsed time is the amount of time that has passed between two events, typically measured from a start time to an end time.

Tags

CCSS.3.MD.A.1

Front

How do you calculate elapsed time?

Back

To calculate elapsed time, subtract the start time from the end time. If the end time is on the next day, adjust accordingly.

Tags

CCSS.3.MD.A.1

Front

What is the formula to find the end time given a start time and duration?

Back

End Time = Start Time + Duration.

Tags

CCSS.3.MD.A.1

Front

If the current time is 3:00 PM, what will the time be in 2 hours and 30 minutes?

Back

5:30 PM.

Tags

CCSS.3.MD.A.1

Front

How do you convert hours and minutes into just minutes?

Back

Multiply the number of hours by 60 and add the minutes. For example, 2 hours and 30 minutes = (2 * 60) + 30 = 150 minutes.

Tags

CCSS.4.MD.A.1

CCSS.5.MD.A.1

Front

What is the difference between AM and PM in time notation?

Back

AM (Ante Meridiem) refers to the time from midnight to noon, while PM (Post Meridiem) refers to the time from noon to midnight.

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

CCSS.W.2.3

CCSS.W.3.3C

Front

How do you handle time calculations that cross over midnight?

Back

When calculating time that crosses midnight, treat the end time as being on the next day. For example, from 11:00 PM to 1:00 AM is 2 hours.

Tags

CCSS.3.MD.A.1

Front

What is the elapsed time from 8:00 AM to 3:00 PM?

Back

7 hours.

Tags

CCSS.3.MD.A.1

Front

If an event starts at 5:15 PM and lasts for 1 hour and 45 minutes, what time does it end?

Back

6:00 PM.

Tags

CCSS.3.MD.A.1

Front

How do you find the time 45 minutes before 10:30 AM?

Back

10:30 AM - 45 minutes = 9:45 AM.

Tags

CCSS.3.MD.A.1