10 30 to 5 30 Is How Many Hours

Time Duration

We will learn how to calculate the time duration in minutes and in hours.

We can calculate the duration of an activity if we know the starting and finishing time. For example, if the morning assembly in a school begins at 8:00 a.m. and finishes at 8:25 a.m. the duration of assembly is the difference of finishing time and starting time.

0825 - 800 = 25 minutes.

So, if we know the starting time and the duration of an activity, we can calculate finishing time of the activity.

Time Duration (in minutes)

Ron and Clara play badminton every evening. Yesterday, their game started at 5 : 15 p.m. and finished at 5 : 50 p.m. How long did their game last?

Time Duration

     50 minutes — 15 minutes---- 35 minutes.

How to Calculate the Time Duration

Rita left for Naira's house at 7 : 30 p.m. She reached Naira's house at 8:10 p.m. How long did it take her on the way?

   7 : 30 p.m.     → 8 : 00 p.m.     → 8 : 10 p.m.

It took Rita 40 minutes to reach Naira's house.

Time Duration (in hours and minutes)

Uma's flight took off from New Delhi at 11 : 15 in the morning (11 : 15 a.m.). When it arrived in Mumbai, her watch read 1 : 32 in the afternoon (1 : 32 p.m.). How long was the flight?

Look at the clocks.

Count the number of hours from 11 : 15 to 1 : 15. It is 2 hours.

Count by 5s and 1s to count the minutes from 1 : 15 to 1 : 32.

It is 17 minutes.

The flight was 2 hours and 17 minutes long.

Andy left his home for school at 6 : 30 a.m. He reached school after 40 minutes. At what time did he reach school?

Learn How to Calculate the Time

     30 minutes   +   10 minutes

Andy reached school at 7 : 10 a.m.

Duration of Time:

Duration of an activity is the difference between the starting time and finishing time. When the starting and finishing time is given, we can easily find the duration of any activity.

For examples, if Terry boarded her school bus at 7 o'clock and she reached school at 8 o'clock, the duration of her travel is 1 hour.

Solved Example on Duration of Time:

Nancy started walking in a park at 6:00 a.m. She walked for 1 hour. At what time did she stop walking?

Solution:

Starting time = 6:00

Duration of walking = 1 hour

The time after 1 hour = 6 + 1 = 7

Nancy stopped walking at 7 o'clock.

Questions and Answers on Duration of Time:

1. How many minutes have passed from the time on:

(i) Clock A and Clock B __________

(ii) Clock C and Clock D __________

Duration of Time

Calculate Time Duration

Answers:

1. (i) 50 minutes

(ii) 15 minutes

2. How many hours and minutes are there between:

(i) 7:20 a.m. and 11:10 a.m.

(ii) 6:15 a.m. and 9:40 a.m.

(iii) 9:00 a.m. and 7:30 p.m.

(iv) 5:20 p.m. and 7:40 p.m.

Answers:

2. (i) 3 hours 50 minutes

(ii) 3 hours 25 minutes

(iii) 10 hours 30 minutes

(iv) 2 hours 20 minutes

3. What will be the time after 1 hour?

(i) 8:00 → _____

(ii) 9:00 → _____

(iii) 10:00 → _____

(iv) 8:30 → _____

(v) 10:30 → _____

(vi) 5:30 → _____

Answer:

3. (i) 9:00

(ii) 10:00

(iii) 11:00

(iv) 9:30

(v) 11:30

(vi) 6:30

4. How many hours have passed when the hour hand moved from:

(i) 10 to 12

(ii) 4 to 8

(iii) 9 to 12

(iv) 5 to 9

(v) 8 to 12

(vi) 11 to 12

Answer:

4.(i) 2 hours

(ii) 4 hours

(iii) 3 hours

(iv) 4 hours

(v) 4 hours

(vi) 1 hour


5. Draw hands to show the time 1 hour after the given time in each set of clocks.

Draw Clock

Draw Clock Hands

Draw Clock Hands Image

Draw Clock Hands Pic

Answer:

5.

Draw Clock Ans

Draw Clock Hands Ans

Draw Clock Hands Image Ans

Draw Clock Hands Pic Ans

6. What will be the time 6 hours 30 minutes after the following times.

(i) 9:00 a.m.

(ii) 10:45 p.m.

(iii) 6:15 a.m.

(iv) 2:30 p.m.

Answers:

6. (i) 3:30 p.m.

(ii) 5:15 a.m.

(iii) 12:45 p.m.

(iv) 9:00 p.m.

7. Fill the missing places in the table.

S.No.

Start Time

End Time

Elapsed Time

(i)

10:45 a.m.

1:15 p.m.

__________

(ii)

4:30 p.m.

11:15 p.m.

__________

(iii)

2:00 p.m.

3:15 a.m.

__________

(iv)

9:32 p.m.

__________

2 hours 16 minutes

(v)

__________

8:47 a.m.

6 hours 14 minutes

Answers:

7. (i) 2 hours 30 minutes

(ii) 6 hours 45 minutes

(iii) 13 hours 15 minutes

(iv) 11:48 p.m.

(v) 2:33 a.m.

Worksheet on Word Problems on Time Duration:

8. On May 1, The Sun rose at 5:05 a.m. and set at 7:45 p.m. For how long could the Sun be seen?

Answer: 14 hours 40 minutes

9. Sharon is unwell and the doctor advised her to drink Glucose after every 45 minutes. If Sharon drank a glass of Glucose at 7:30 a.m., then at what time will she take the next two glasses of Glucose?

Answer: 8:15 a.m., 9 a.m.

10. The weather report of a city is updated after every 5\(\frac{1}{2}\) hours. If the report was updated at 8:30 p.m., then when will the next update take place?

Answer: 2:00 a.m.

11. Rita took 7 hours 10 minutes to travel from state A to State B. If she reached the state B at 12:00 noon, at what time did she leave from the state A.

Answers: 4:50 a.m.

12. Mike completed his work in 1 hour 35 minutes. He started at 4:45 p.m. At what time did he complete his work?

Answers: 6:20 p.m.

13. Tine started her homework at 6:30 p.m. and finished at 7:10 p.m. Find the elapsed time.

(i) 1 hour 40 min

(ii) 30 min

(iii) 40 min

(iv) 1 hour 5 min

Answer:

13. (iii) 40 min

14. Sam started decorating his Christmas Tree at 7:35 p.m.. He completed his work in 1 hour 23 min. At what time did he finish his work?

(i) 9:50 a.m.

(ii) 8:58 p.m.

(iii) 7:40 a.m.

(iv) 8:50 p.m.

Answer:

14. (ii) 8:58 p.m.

15. In a school, the first period starts at 7:40 a.m. If each period is for 30 minutes, what will be the time at the end of the third period?

(i) 9:30 a.m.

(ii) 10:00 a.m.

(iii) 9:10 a.m.

(iv) 11:00 p.m.

Answer:

15. (iii) 9:10 a.m.

Related Concepts

Units for Measuring Length

Measuring Instruments

To Measure the Length of a Line-segment

Perimeter of a Figure

Unit of Mass or Weight

Examples on Unit of Mass or Weight

Units for The Measurement of Capacity

Examples on Measurement of Capacity

Measurement of Time

Read a Watch or a Clock

Antemeridian (a.m.) or Postmeridian (p.m.)

What Time it is?

Time in Hours and Minutes

24 Hour Clock

Units of Time

Examples Units of Time

Time Duration

Calendar

Reading and Interpreting a Calendar

Calendar Guides us to Know


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10 30 to 5 30 Is How Many Hours

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