Work out the minutes from the start time to the first hour and add this to the number of minutes from the last hour until the finish time. Write all of the hours in between these times on the number line. To work out elapsed time on a number line, write the start time on the left of the line and the finish time on the right of the line. The elapsed time is 4 hours and 30 minutes. Looking at the hours, 16 – 12 = 4 and looking at the minutes, 40 – 10 = 30. For example to calculate the elapsed time between 12:10 and 16:40, subtract 12:10 from 16:4. Subtract the minutes and hours separately. The formula for calculating elapsed time is elapsed time = end time – start time. If this is not the case, negative numbers will arise if a larger number is subtracted from a smaller number. The elapsed time can be calculated by direct subtraction only if the number of minutes in the final time is greater than the number of minutes in the start time. The elapsed time is 13 hours and 35 minutes.
For example, between 10:22 and 23:57, we subtract the hours: 23 – 10 = 13.
Subtract the hours and minutes separately. If the number of minutes in the final time is larger than the number of minutes in the start time, the elapsed time can be calculated by subtracting the start time from the final time. Here is a set of examples of calculating the elapsed time between two given times. Adding the hours and minutes separately, the total elapsed time is 1 hour 15 minutes. Then count the 15 minutes from 10:00 to 10:15. Then count the 1 hour from 09:00 until 10:00. First count 40 minutes from 08:20 until the next hour of 09:00. The elapsed time is 3 hours and 26 minutes.įor example, calculate the elapsed time between 08:20 and 10:15. The final step is to add the hours and minutes to find a total. Simply read off the minutes from the final time. From 15:00 until 15:11, there are 11 minutes.
The third step is to count the number of minutes from this hour until the final time. From 12:00 until 15:00, there are 3 hours. The second step is to count on in hours until the hour immediately before the final time. The first time is 11:45 and the hour that comes after it is 12:00.Įach hour has 60 minutes and so, to work out the number of minutes between 11:45 and 12:00, subtract 45 from 60. The first step is to count the number of minutes from the first time to the hour that comes after it.
0 kommentar(er)
