NCERT Class 4 Maths Chapter 8 Carts and Wheels

NCERT Class 4 Maths Chapter 8 Carts and Wheels solutions are provided here for students who are preparing for their final exams. These NCERT Solutions consist of a question bank which will help students to understand each and every concept explained in the chapter. The solved questions are designed by our experts and prescribed for Class 4, with respect to the CBSE syllabus (2023-2024).

The question paper for the final exam is prepared according to the exercise questions presented in Chapter 8 of the 4th Class Maths NCERT book. Therefore, we have provided solutions for all the types of questions which can be asked in this chapter to help students score well.

NCERT Solutions for Class 4 Maths Chapter 8 Carts and Wheels

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Access NCERT Class 4 Maths Chapter 8 Carts and Wheels Solutions

NCERT book Page No: 81

Question: 1

You must have seen many such round things around you. List some more in your notebook.

Answer: The list of round things around us is as follows:

1. Bangles

2. Tawa

3. Bowl

4. Wheelchair

5. Coins

6. Plate

7. Moon

8. Sun

9. Ball

10. Tyre

NCERT book Page No: 82

Round Bangle

Question: 2

Have you ever gone to a bangle shop?

Answer: Yes, I have gone to the bangle shop along with my mother.

NCERT Solutions Mathematics Class 4 Chapter 8 - 1

Question: 3

Guess which of these bangles is of your size?

Answer: The smallest bangle is of my size

Question: 4

Take a wire and make a bangle for yourself. Can your teacher wear this bangle?

Answer: I made a bangle by wrapping a wire around a pipe. No, my teacher cannot wear this bangle.

Question: 5

A bangle can be used to trace a circle. What are the other things around you that you can use to trace a circle?

Answer: The other things that can be used to trace a circle are coins, plates, caps of bottles, etc.

Question: 6

Trace a circle with the help of some of these in your notebook or on the ground.

(a) Which thing makes the smallest circle?

(b) Which thing makes the biggest circle?

Answer: (a) Circle made with the help of a pen cap is the smallest circle.

(b) Circle made with the help of a plate in which we have food is the biggest circle.

NCERT book Page No: 83

NCERT Solutions Mathematics Class 4 Chapter 8 - 2

Question: 7

Do you play these games?

Answer: Yes, I play these games.

Question: 8

Which song do you sing when you play these?

Answer: We sing rain-rain go away, come again another day while playing these games.

Question: 9

What if a rectangle was made? Discuss.

Answer: There are some games played by making rectangles. But games like cricket needs a circle because if a rectangle field is constructed to play the game, the distance of boundary from the players will be unequal.

Question: 10

Think of some other games you play by making circles.

Answer: Games played by making circles are musical chair races, passing a parcel, etc.

NCERT book Page No: 84

Making a Circle

NCERT Solutions Mathematics Class 4 Chapter 8 - 3

Question: 11

(a) Is any of these a good drawing of a circle?

Answer: No, none of these is good for drawing a circle.

(b) Can you draw a circle on the floor with chalk? Try.

Answer: Yes, by using chalk I can draw a circle on the floor.

NCERT Solutions Mathematics Class 4 Chapter 8 - 4

(c) Also, draw a circle in your notebook using a pencil.

Answer: The circle drawn with a pencil is shown below.

NCERT Solutions Mathematics Class 4 Chapter 8 - 5

(d) Look at the circles drawn by your friends. Who has drawn the best circle?

Answer: Circles drawn by my friends are given below.

NCERT Solutions Mathematics Class 4 Chapter 8 - 6

The circle drawn by Soni is the best circle.

NCERT book Page No: 85-86

Making a Circle with a Rope

Question: 12

(a) Do the activity in small groups. Each group should take a rope of a different length. See the circles made by different groups.

Answer:

NCERT Solutions Mathematics Class 4 Chapter 8 - 7

Circle drawn by Rani’s group is the smallest circle.

(b) How long was their rope?

Answer:

Group Length of their rope
Rani’s Group 2 metre
Molu’s Group 5 metre
Rahul’s Group 8 metre

(c) Does a longer rope make a bigger circle? Why is it so?

Answer: Yes, it can make a bigger circle. This is because a longer rope acts as a bigger radius. Hence, the circle made by the longest rope is the biggest circle.

NCERT Solutions Mathematics Class 4 Chapter 8 - 8

(d) What was the radius of the smallest circle?

Answer: The smallest circle radius was 2 metres.

Question: 13

Draw the radius of this bangle using a ruler. Measure the length of the radius.

NCERT Solutions Mathematics Class 4 Chapter 8 - 9

Answer:

NCERT Solutions Mathematics Class 4 Chapter 8 - 10

The radius of this bangle is 2 cm.

Question: 14

Now see what your friends have drawn. Discuss the length of the radius they measured. Is it the same as yours?

Answer: The radius drawn by all the friends is the same.

Question: 15

Draw the radius of these circles. Guess which circle has the longer radius.

NCERT Solutions Mathematics Class 4 Chapter 8 - 11

Answer:

NCERT Solutions Mathematics Class 4 Chapter 8 - 12

Here, the radius of the bigger circle is longer.

Question: 16

Measure the radius of both circles using a ruler. Write the length of their radius.

(a) Radius of the green circle

(b) Radius of the blue circle

Answer:

(a) Radius of the green circle is 1 cm.

(b) Radius of the blue circle is 1.8 cm.

Find out

Question: 17

Measure the radius of the wheels of a bicycle or a bullock cart. You can use a thread or a measuring tape.

Answer: The radius of the wheels of a bicycle is 14 inches. The radius of the wheel of a bullock cart is 22 inches.

Question: 18

Are all the wheels of a bicycle or a bullock cart of the same radius?

Answer: Yes, they are of the same radius.

Question: 19

Have you seen a tractor or a road roller?

Answer: Yes, I have seen both.

Question: 20

Which is the biggest wheel you have ever seen?

Answer: The biggest wheel I have ever seen is the wheel of a merry-go-round.

Question: 21

Are all wheels of a tractor or road roller of the same radius?

Answer: No, the wheels of a tractor or road roller do not have the same radius. Their back wheels are bigger.

NCERT Solutions Mathematics Class 4 Chapter 8 - 13

Question: 22

Lali and Kali are tied to a pole with ropes. Kali has a longer rope. Who can look for more grass to eat?

Answer: Kali can look for more grass to eat as she has a longer rope.

NCERT book Page No: 88

Question: 23

Why did Naina get such a drawing? Discuss. Can a circle have more than 1 centimetre.

NCERT Solutions Mathematics Class 4 Chapter 8 - 14

Answer: Yes, I got a circle.

Question: 24

Is this circle better than the one you made earlier without a compass? Draw the radius of this circle and measure it.

Answer: Yes, this circle is better than the earlier circle, which was drawn without using the compass. The radius of the circle is 3 centimetres.

NCERT book Page No: 89

NCERT Solutions Mathematics Class 4 Chapter 8 - 15

Question: 25

Why did Naina get such a drawing? Discuss. Can a circle have more than one centre?

Answer: Naina got such a drawing, as she had changed the centre of the circle. No, a circle cannot have more than one centre.

NCERT Solutions Mathematics Class 4 Chapter 8 - 16

Question: 26

Did any one of you ever get a shape like Naina’s?

Answer: Yes, I got the shape like Naina when I drew a circle using more than one centre.

NCERT book Page No: 91

NCERT Solutions Mathematics Class 4 Chapter 8 - 17

Question: 27

Now you trace a circle on paper using a bangle. Cut it. Then find its centre like Sameena did.

Answer: Trace the circle by using a bangle in a notebook. Now, cut the circle from its outline. Fold the circle in half. Again fold it in half. Now, open the folded circle. Here, the crossing point of the two creased lines is its centre.

NCERT Solutions Mathematics Class 4 Chapter 8 - 18

NCERT book Page No: 92

Balancing Act

NCERT Solutions Mathematics Class 4 Chapter 8 - 19

Question: 28

Can you balance a plate on your finger?

Answer: No, I cannot balance a plate on my finger. It is very difficult, as it requires a lot of practice.

Question: 29

You also try to balance a plate or a round lid on your finger. Where does it balance?

Answer: The centre of a plate or a round lid is the place where we balance while trying on our fingers.

NCERT book Page No: 92-93

NCERT Solutions Mathematics Class 4 Chapter 8 - 20

Now everybody was excited to spin their tops which looked like this.

NCERT Solutions Mathematics Class 4 Chapter 8 - 21

Question: 30

(a) Whose top will not spin at all?

(b) Whose top will spin a little?

(c) Whose top will spin the best?

(d) In whose top is the stick nearest to the centre?

Answer:

(a) Zakir’s and Naina’s tops will not spin at all.

(b) The top made by Guddo will spin a little.

(c) The top made by Appu will spin the best.

(d) The top in which the stick is nearest to the centre is Appu’s top.

Question: 31

To make the top spin well, where will you make the hole?

Answer: We will make the hole at its centre to spin the top well.

Frequently Asked Questions on NCERT Solutions for Class 4 Maths Chapter 8

Q1

In Chapter 8 of NCERT Solutions for Class 4 Maths, list out some round things around us.

Round things around us are the wheels of carts, bicycles, motorcycles, cars, buses and trucks, pottery wheels, food items like pizza, chapati, dosa, idly, oranges and cakes, articles like bangles, buttons, plates, the dial of clocks, etc.
Q2

Name a few games that are played by making circles, as discussed in Chapter 8 of NCERT Solutions for Class 4 Maths.

A few games that are played by making circles are cat and mouse, come with us or run away, team circle ball, stand up and shout, find the ring and musical chairs.
Q3

How did Ariba manage to make a circle with a rope in Chapter 8 of NCERT Solutions for Class 4 Maths?

Ariba decided to use nails and a rope to make a circle on the ground. She took a thin rope and tied nails on both ends of the rope. Then she made a circle with the help of her friend by tracing the path made by one nail and keeping the other nail fixed. Now, the length of the rope used is equal to the radius of the circle.
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