Previously we have discussed about is 0 a rational number and In today's session we are going to discuss about Elapsed time which comes under cbse text books,It is the duration of time which occurs between two given time. Let us first understand the basic concept of time:
Time is represented in two ways:
1. 12 hour clock: In 12 hr clock the time is represented in AM ( for 1 to 12 hrs in morning ) and ( 13 to 24 hours after noon.PM
2. 24 hour clock: Such clocks are used in airports , hospitals and railway stations, Here the time is represented from 0000 hours to 2300 hours. If we need to write 2:00 pm, it is written as 1400 hrs in 24 hrs clock.
Also 12:00 noon is written as 1200 hours and 12:00 midnight is represented as 0000 hours. This concept helps us to solve the elapsed time problems very easily.
Now let us try to find the elapsed time Math problems between given two times:
starting time ending time elapsed time
1:15 pm 1:45 pm = 1:45 - 1:15 = 30 minutes
1: 20 am 2:20 am = 2:20 - 1:20 = 1hour 0 minutes
3: 40 am 1:40 pm
Now the problem looks difficult, in such cases we simply convert both time into 24 hour clock and see
0340 hrs 1340 hours = 1340 - 0340 = 10 00 hours
In this way various other problems of elapsed time can be calculated. In Grade IV, we will learn only basic part of it:
Let us take few examples:(want to Learn more about Elapsed time,click here),
Ram started for his school at 8:05 am and he took 25 minutes to reach the school. At what time will Ram reach the school?
Sol: Ram started for school at = 8:05 am
Time taken to reach the school = 0:25 hrs
So, Ram reached the school at 8:05 + 0:25
= 8:30 AM Ans
Similarly if the time is in AM and PM, all calculations are done by converting them in 24 hours clock.
So this is a brief article about elapsed time and if anyone want to know about Estimates of Measurements in Grade V then they can refer to Internet and text books for understanding it more precisely.Read more maths topics of different grades such as Collect and represent data in the next session here.
Time is represented in two ways:
1. 12 hour clock: In 12 hr clock the time is represented in AM ( for 1 to 12 hrs in morning ) and ( 13 to 24 hours after noon.PM
2. 24 hour clock: Such clocks are used in airports , hospitals and railway stations, Here the time is represented from 0000 hours to 2300 hours. If we need to write 2:00 pm, it is written as 1400 hrs in 24 hrs clock.
Also 12:00 noon is written as 1200 hours and 12:00 midnight is represented as 0000 hours. This concept helps us to solve the elapsed time problems very easily.
Now let us try to find the elapsed time Math problems between given two times:
starting time ending time elapsed time
1:15 pm 1:45 pm = 1:45 - 1:15 = 30 minutes
1: 20 am 2:20 am = 2:20 - 1:20 = 1hour 0 minutes
3: 40 am 1:40 pm
Now the problem looks difficult, in such cases we simply convert both time into 24 hour clock and see
0340 hrs 1340 hours = 1340 - 0340 = 10 00 hours
In this way various other problems of elapsed time can be calculated. In Grade IV, we will learn only basic part of it:
Let us take few examples:(want to Learn more about Elapsed time,click here),
Ram started for his school at 8:05 am and he took 25 minutes to reach the school. At what time will Ram reach the school?
Sol: Ram started for school at = 8:05 am
Time taken to reach the school = 0:25 hrs
So, Ram reached the school at 8:05 + 0:25
= 8:30 AM Ans
Similarly if the time is in AM and PM, all calculations are done by converting them in 24 hours clock.
So this is a brief article about elapsed time and if anyone want to know about Estimates of Measurements in Grade V then they can refer to Internet and text books for understanding it more precisely.Read more maths topics of different grades such as Collect and represent data in the next session here.
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