NCERT Solutions for Class 4 Maths Chapter 4: In Chapter 4 of the NCERT Maths textbook for Class 4, titled Tick-Tick-Tick introduces students to the concept of time. It emphasizes understanding the different units of time measurement, including seconds, minutes, and hours. Through engaging activities and exercises, students learn how to read and interpret clocks, both analog and digital, and solve problems related to time intervals.
The chapter also covers the basics of converting between different units of time, such as converting minutes into hours and vice versa. The NCERT solutions for this chapter provide detailed explanations and step-by-step methods to help students master these concepts providing practice problems that reinforce their understanding and application of time-related calculations.NCERT Solutions for Class 4 Maths
NCERT Solutions for Class 4 Maths Chapter 4 PDF
Question: 1
Three friends read time from a clock. Who is right?
Answer: In the first clock, the hour hand is positioned at 3, while the minute hand is at 12, indicating that it is exactly 3 o'clock. Thus, Pinki's observation is correct.
In the second clock, the hour hand has moved past 5, and the minute hand points to 7, which signifies 35 minutes past the hour. Therefore, the time is 5:35, and once again, Pinki is accurate. In the third clock, the hour hand points to 7, and the minute hand is at 3, which corresponds to 15 minutes past 7. Hence, the time is 7:15, confirming that Pinki's reading is correct.NCERT Books for Class 4 Maths 2024-25
Question: 2
Show the following times on the clock:
Answer:
Question: 3
Do you like sky-watching? If yes, answering the following will make you happy:
(a) At what time does the Sun rise at your place?
(b) When does the sunset?
(c) Does the sun rise and set at the same time every day?
Answer:
(a) The Sun rises at 6:00 a.m. at my place. (b) The Sun sets at 6:30 p.m. at my place. (c) No, the Sun does not rise and set at the same times every day.Find out
Question: 4
How long will it take the minute hand to move from
Answer:
Question: 5
Draw where the hands will be:
Answer:
Question: 6
How long does your school assembly take?
Answer: School assembly takes 30 minutes.
Question: 7
How long is your lunch break?
Answer: In my school, the lunch break is 1 hour long.
Question: 8
How long is your game period?
Answer: The game period in our school is 45 minutes long.
Question: 9
Is it the same as all the other periods?
Answer: All the periods, including the game period, are of the same length in your school.
Question: 10
The games period and lunch break seem very short! Aren’t they?
Answer: If the time is sufficient for both playing games and having lunch, then it’s likely well-suited to your school’s schedule and needs. It’s all about how effectively you can use that time!
NCERT Book Page No. 40
Question: 11
How many minutes can these activities take? Make a guess and then check at home.
Answer:
* Boiling of 1 litre of milk takes about 6 minutes. * Filling a bucket takes about 3 minutes. * Sweeping the room takes about 6 minutes.Activity Time
Question: 12
In one minute, how many times can you
(a) Snap your finger?
(b) Skip a rope?
(c) Jump up and down?
(d) ___________ _____________
Write more such fun activities in this column
Answer:
(a) I can snap my finger 10 times in one minute. (b) I can skip a rope 35 times in a minute. (c) I can jump up and down 45 times in one minute. (d) I can blink my eyelids 50 times in a minuteQuestion: 13
Here is another challenge for you. How long can you
(a) Speak nonstop?
(b) Stand on one leg?
(c) Sing ‘Aaa…… without a break?
Answer:
(a) I can speak non-stop for 5 minutes. (b) I can stand on one leg for 3 minutes. (c) I can sing ‘Aaaa…. without a break for 2 minutes.Question: 14
How long do you take to
(a) Run a 50-metre race?
(b) Collect 50 pebbles from the ground?
(c) Count 1 to 100?
Answer:
(a) I can run a 50-metre race in 5 minutes. (b) I can collect 50 pebbles from the ground in 3 minutes. (c) I can count 1 to 100 in 1 minute.Related Links-
Question: 15
Let’s look at a clock again! Solve the following:
(a) The minute hand started from ‘2’. How many minutes will it take to come back to ‘2’ again?
(b) What happens to the hour hand? Does it also move? How long will it take to move from one number to the next?
(c) Look around you and list the activities that take about one hour to complete.
1. _____________
2. ______________
3. _______________
4. _____________
5. ______________
Answer:
(a) The minute hand takes 60 minutes to come back to 2 again. (b) Yes, the hour hand also moves. The hour hand takes 1 hour to move from one number to the next number. (c) Following is the list of activities that takes one hour to complete: 1. Cooking food 2. Watching the news 3. Getting ready for a function 4. Completing homework 5. Playing footballQuestion: 16
How long does it take to cook dinner at home? More than an hour / less than an hour?
Answer: So, it generally takes more than an hour to cook dinner at home.
Question: 17
Ask your father if he can cook as fast as your mother does. Yes / No
Answer: No.
Question: 18
Which games take less than an hour to finish?
Answer: Games like the long jump and high jump are typically quick events, often taking just a few minutes for each attempt. Board games like Snake and Ladder can also be completed in under an hour, depending on the pace of play. Other examples might include quick card games, short sports matches, or mini-games in various sports.
Question: 19
How long does a football match take?
Answer: The duration of a football match is 80 minutes.
NCERT Book Page No. 43
Question: 20
Mark the above in the correct order on Muniya’s Time Line.
Answer: The correct order on Muniya’s Time Line is given below:
Question: 21
Muniya got her first tooth in September. How many months old was she then? How many months have passed from March to September?
Answer: Muniya was 6 months and 11 days old when she got her first tooth on September 15, 2005. From March to September is indeed a span of six months.
Question: 22
How old was Muniya, when
(a) she first sat up?
(b) she got her first tooth? Answer: (a) Muniya was 8 months and 6 days old when she sat up for the first time. (b) Muniya was 6 months and 11 days old when she got her first tooth.Question: 23
What did she do first
1. Walking/eating a banana?
2. Crawling/standing?
Answer:
1. She ate a banana first. 2. She started crawling first.Question: 24
Now make a timeline of this dog’s life in your notebook.
Answer: The timeline of the dog’s life is given as follows:
After 2 Weeks | After 3 Weeks | After 4 Weeks | In 7 Months | After 1 Year | |
Born | It opened its eyes | It got its first teeth and started eating | It started walking around but was still wobbling | It got a full set of teeth | It was become a grown-up dog and got its own puppies |
Question: 25
Note the differences between Muniya and Rani’s puppy:
Answer: The difference between Muniya and Rani’s puppy is as follows:
Actions | Muniya (age) | Rani’s Puppy (age) |
Started walking | After 11 months of her birth | After 1 month of its birth |
Ate food for the first time | 6 months after her birth | After 3 weeks of its birth |
Got the first tooth | 6 months after her birth | After 3 weeks of its birth |
Question: 26
Do all animals grow at the same speed?
Answer: No, the growth of all the animals is not the same.
Question: 27
Discuss about the growth of
1. A hen
2. A cow
3. A bird
Answer: The animals mentioned above grow in the following order:
A hen, bird, and a cow.Question: 28
Here are the pictures of grandfathers posing for a photograph. Who looks the oldest to you?
(a) How much older is Appu’s grandfather than Rani’s grandfather?
(b) Will Chuchoo’s grandfather ever grow as old as Appu’s grandfather?
(c) How much younger is Chuchoo rat’s grandfather than Rani’s grandfather?
Answer:
(a) Elephant Appu’s grandfather’s age = 95 years old Rani’s grandfather’s age = 70 years old Difference between their ages = 95 – 70 = 25 years Hence, Appu’s grandfather is older than Rani’s grandfather. (b) No (c) Chuchoo rat’s grandfather’s age = 2 years old Rani’s grandfather’s age = 70 years old Difference in their age = 70 – 2 = 68 years old Therefore, Chuchoo rat’s grandfather is 68 years younger than Rani’s grandfatherQuestion: 29
Now write which dates the following stand for:
5/5/06
20/5/06
7/6/06
1/1/07
Answer:
5/5/06 5 May 2006 20/5/06 20 May 2006 7/6/06 7 June 2006 1/1/07 1 Jan 2007Question: 30
Write the below-given dates in numbers.
1 June 2006
30 May 2006
10 August 2007
Answer:
1 June 2006 1/6/06 30 May 2006 30/5/06 10 August 2007 10/8/07Question: 31
How long did it take for the letter to reach from Ajmer to Nagpur?
Answer: From Ajmer, Atif wrote the letter on 1/5/06. Shobhna got the letter on 6/5/06 in Nagpur. So, the letter took 5 days to reach from Ajmer to Nagpur.
Question: 32
How many days will Atif spend at his Nani’s place?
Answer: On 5/5/06, Atif went to his Nani’s place.
On 20/5/06, he returned back from there. Therefore, he spent 15 days at his Nani’s placeQuestion: 33
Fill in the table:
Answer:
Dates | Number of Days | ||
From | To | ||
Shabana’s holidays | 1 st June 2006 | 10 th August 2006 | 70 days |
Atif’s holidays | 1 st May 2006 | 30 th June 2006 | 60 days |
Question: 34
Who has got longer holidays – Shabana or Atif?
Answer: Shabana got 70 days holidays in her school, while Atif got 60 days holidays in his school. Hence, Shabana got longer holidays than Atif.
Question: 35
Which long holidays do you get in school? Fill the table.
Answer: The given holidays start and end on the dates given below
Occasion | Dates | Number of Days | |
From | To | ||
Summer Holidays Autumn Break Winter Break Holidays after the Exam | 1 st April 11 October 25 December 5 th March | 1 st June 19 October 10 January 2 nd April | 60 days 9 days 17 days 29 days |
Question: 36
(a) In which month was the butter packed?
Answer: The butter was packed on 15 th January 2006.
(b) Which date will it be 180 days after 15/01/06?
Answer: Let us calculate 180 days from the date of manufacture.
Days in January = 17 days In February = 28 days In March = 31 days In April = 30 days In May = 31 days In June = 30 days Total days = 17 + 28 + 31 + 30 + 31 + 30 = 167 days Remaining days = 180 – 167 = 13 days Hence, the date will be 13 th July 2006.(c) Can Chandran eat it on 15 th May 2006?
Answer: Yes, he can eat it on 15 th May 2006.
Find Out
Question: 37
Which are the other things that come with an expiry date?
Answer: Every product comes with an expiry date. Cold drinks, medicines, biscuits, sweets etc., have an expiry date.
Question: 38
What month and year is written as 07/05? Would it be safe to take the cough syrup in September 2005?
Answer: The month and year is written as 07/05, which shows that it is July 2005. No, it is not safe to take the cough syrup in September 2005 as the expiry date is till July 2005 only.
NCERT Book Page No. 49
Question: 39 Can you guess why they missed the train?
Answer : They missed the train because the railway system uses a 24-hour clock, but they didn't realize that. Their ticket showed the train departure time as 5:30. They thought it was 5:30 PM, but it was actually 5:30 AM. If it had been in the evening, the ticket would have shown 17:30. Since they arrived at 5:15 PM, they were too late.
Question: 40
Look at this chart. It tells the difference between your watch and a 24-hour clock. Try to complete it.
Answer:
Time by Your Watch (12-hour clock) | Time by a 24-hour Clock |
1 O’clock in the afternoon | 13:00 hours |
2 O’clock in the afternoon | 14:00 hours |
3 O’clock in the afternoon | 15:00 hours |
3:30 in the afternoon | 15:30 hours |
6 O’clock in the evening | 18:00 hours |
9 O’clock in the evening | 21:00 hours |
12 O’ clock at midnight | 24:00 hours |
Question: 41
Now can you tell why a 24-hour clock is called so?
Answer: We know that there are 24 hours in a day. So, the 24 hours clock shows the time for the entire day. Therefore, it is called a 24-hour clock.
Question: 42
Suppose a train leaves at 8:30 at night. The time written on the Railway ticket would be ____.
Answer: The time written on the Railway ticket would be 20:30.
Question: 43
You must have noted the time of sunrise and sunset. Write here using am and pm.
Answer: The time of sunrise and sunset on the 1 st June.
Time of Sunrise | 6:00 am |
Time of Sunset | 6:30 pm |
Question: 44
Where have you seen a 24-hour clock being used?
1. _________
2. _________
3. _________
Answer: The 24-hour clock is used in
1. Railway station 2. Airport 3. Bus stand