NCERT Solutions for Class 5 Mathematics Maths Mela (English) Chapter 12
NCERT solutions for Class 5 Mathematics Chapter Racing Seconds – complete answers & explanations
This blog provides complete NCERT solutions for Class 5 Mathematics Chapter Racing Seconds strictly based on the worksheet provided. In this chapter, students learn how to read time, calculate elapsed time, convert hours into minutes and seconds, and understand the importance of seconds in daily life. This chapter is important because it builds strong practical time-measurement skills that help students in exams and everyday activities.
What this NCERT chapter covers?
1. Understanding time in hours, minutes,
and seconds.
2. Reading clocks and calculating elapsed time.
3. Converting time between 12-hour and 24-hour formats.
4. Changing hours into minutes and minutes into seconds.
5. Solving real-life word problems based on time duration.
6. Learning to estimate activities measured in seconds and minutes.
How to use these NCERT solutions?
1. First read each worksheet question carefully and try solving it yourself.
2. Use these NCERT solutions to check your answers in the exact worksheet order.
3. Compare your method with the worksheet-based answers carefully.
4. Parents and teachers can guide students in understanding clock-based activities.
5. Follow each section exactly as arranged in the worksheet for better revision.
Important tips & tricks for students
1. Always check whether time is in a.m., p.m., or 24-hour format before answering.
2. Be careful while converting hours into minutes and minutes into seconds.
3. Count elapsed time step by step to avoid mistakes.
4. In picture-based clock questions, observe clock hands carefully before answering.
5. For activity-based questions, complete the task practically where required.
6. Attempt all word problems slowly and verify addition or subtraction of time.
NCERT solutions – complete answer key
Let us find out
1. 01:15 p.m.
2. 01:42 p.m.
3. 27 minutes
4.
(a) 27 minutes
(b) 5 hours
(c) 2 hours 15 minutes
5.
(a) Rani
(b) Raghav
6.
1. 08:35 a.m.
2. 11:55 hours
3. 17:30 hours
4. 21:35 hours
7.
1 – 06:30 hours
2 – 20:45 hours
3 – 23:45 hours
4 – 04:30 hours
5 – 19:30 hours
6 – 01:30 hours
School race
Akira won the race.
Time taken: 01:55 minutes
Let us do
1. Blinking of eyes – Answers may vary.
2. Switching on and switching off the lights – Answers may vary.
3. Counting from 1–20 – Answers may vary.
4. Filling a glass from the tap – Answers may vary.
5. Melting of an ice-cube – Answers may vary.
6. Making a phone call – Answers may vary.
7. Sitting down on the floor – Answers may vary.
8. Drinking a glass of water – Answers may vary.
9. Snapping fingers – Answers may vary.
10. Washing hands – Answers may vary.
List events other than the ones listed above:
Answers may vary.
Estimate and verify how many of these you can do in a minute:
Answers may vary.
Let us find
1. Answers may vary.
2. Answers may vary.
3. Answers may vary.
Let us do
Observe the clocks and fill in the blanks:
1. Rani took ______ sec.
2. Raghav took ______ sec.
3. Ritu took ______ sec.
4. Raghu took ______ sec.
Draw the missing seconds hand on the clocks on the right side.
1. Raghu took 20 sec. to read a sentence in his book.
2. Rani took 30 sec. to color a rectangle.
3. Raghav took 60 sec. to move from his home to the garden.
4. Ritu took 40 sec. to wash a plate.
Let us do
1(a)
1 hr = 60 min
2 hr = 120 min
4 hr = 240 min
7 hr = 420 min
8 hr = 480 min
9 hr = 540 min
11 hr = 660 min
12 hr = 720 min
1(b)
(i) 70 minutes
(ii) 165 minutes
(iii) 195 minutes
(iv) 260 minutes
(v) 1 hour 15 minutes
(vi) 2 hours 30 minutes
(vii) 3 hours 40 minutes
(viii) 6 hours 30 minutes
2. 3 hours 20 minutes
3. 1 hour 5 minutes
1(c)
1 min = 60 sec
2 min = 120 sec
5 min = 300 sec
10 min = 600 sec
15 min = 900 sec
20 min = 1200 sec
25 min = 1500 sec
(i) 5 min 20 sec
(ii) 3 min 45 sec
(iii) 11 min 40 sec
(iv) 16 min 40 sec
(v) 613 sec
(vi) 248 sec
(vii) 940 sec
4. 08:00 PM
5. 08:30 PM
6. 12:40 PM
7. 07:30 PM
8. 06:40 PM
9. 01:05 PM
10. 05:00 AM
Why NCERT solutions help students?
NCERT solutions help students prepare better for exams by giving chapter-wise accurate answers in textbook order. They improve concept clarity, strengthen time calculation skills, and build confidence in solving practical mathematics problems independently.
Help your child build strong Mathematics fundamentals with expert-guided learning support.