NCERT Class 4 Maths Chapter-1 Building With Bricks

NCERT Solutions for Class 4 Maths Chapter-1

This page consists of NCERT Solutions for Chapter 1 Building With Bricks prepared by Maths experts. All the questions asked in the Building With Bricks of NCERT textbook are solved with relevant methods recommended by CBSE.

A brief explanation of Chapter 1 Building With Bricks

This chapter starts with the true story of Jagriti School in Murshidabad (West Bengal) and explains the type of bricks and their use. This chapter gives you an idea about what is the imgortance of brick while making up the wall. With the help of the image, NCERT explains lots of walls prepared with different sizes of bricks and their dimensions. Children will learn the application of shape, size, and height and how this parameter can alter the overall wall size. Students will understand that there are many, many brick kilns in India – thousands of them and what is the use and application of such size bricks. With the help of different types of brick, one can get an idea about the number and build the foundation on what is the number and its applications.

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NCERT Solutions For Class 4 Maths

Missing Question 1. Which pattern you like the most?

Ans. We can make as many brick patterns as shown in the picture.

I would like the bricks which will make the shape of dome which is in the pattern 5 .

Missing Question 2. Have you seen these patterns anywhere?

Ans. Yes. I have seen these patterns.

Once I have been to an old mosque. I have seen these brick patterns there.

1.

Which Pattern is made in a circle?

Ans. By observing the above given patterns, I observe that pattern J is made in circle.

In which pattern can you show mirror halves?

Ans. Mirror halves objects are those in which the objects are same in both sides of the symmetry line.

Hence draw the symmetry line through the center of the object and see if we obtain mirror halves.

Hence the mirror halves can be shown in 5 patterns. They are A, B, H, I, J . The line can be drawn to show the mirror halves as shown below.

2.

How many faces does a brick have?

Ans. Generally the brick will be in the shape of a cuboid. So every brick has 6 faces.

Is any face a square?

Ans. We know that the brick is of cuboid shape. And cuboid is formed of six rectangular faces. So there is no square face in the cuboid.

Draw the smallest face of the brick.

Ans. The smallest side of the brick is the side with a breadth and height and it can be drawn as follows.

3. Which are the faces of a brick? Mark a ✓

Ans. A brick is the shape of a cuboid of a cube. Thus the shape of the brick consists of rectangles and squares. So insert ✓ symbol in the shape of a rectangle and square.

These are the shapes of squares and rectangles which can make the faces of bricks.

4. Which of these is a drawing of a brick? Mark a (✓).

Ans. The brick is in the shape of cuboid. So, from the diagram, the shape of cuboid is found.

Hence the shape of cuboid has been ticked.

5. Make a drawing of this box to show three of its faces.

Ans. To draw the box with three faces, just flip the box and we obtain the box with three faces.

Hence this box diagram with three faces has been drawn.

6. Can you make a drawing of a brick which shows 4 of its faces?

Ans. The brick is a 3D shape of cuboid.

And so it is imgossible to show the 4 faces of the brick in a sheet of paper.

Missing Question 3. What do you think? Which wall will be stronger?

Ans. Zainab did not interlock the brick pattern.

But Muniya places her bricks interlocking pattern.

So the walls of Muniya will be stronger since her bricks are tightly packed with each other.

7. Different Wall patterns.

• Here are photos of three kinds of brick walls. Can you see the difference in the way the bricks are placed?

Ans. Observe the patterns.

The brick in the first picture has one brick placed horizontally placed between the two vertical placed bricks.

The bricks in the third picture are more tightly packed than that of bricks in the second picture.

• Now match the photo of each wall with the correct drawing below.

Ans. As described in the above question, match the bricks with the interlocking patterns in the patterns given in this question.

Hence the bricks have been matched with its pattern.

8. How any different ‘jaali’ patterns can you see in these two photos?

Ans. The above building seems to have five different ‘Jaali’ patterns. The pillar made of one pattern.

The walls of building made of one pattern,

The upper layer of balcony made of one pattern. The balcony layer with designs made of one pattern.

And the above floor with designson both side made of on pattern. So five patterns of “Jaali” are there in the above building.

9. Now color some bricks red and make your own ‘jaali’ patterns in the wall drawn below.

Ans. To make our own ‘jaali’ pattern, we can choose any side of the above given ‘jaali’ pattern.

Our ‘jaali’ pattern is made in center with some designs on the wall.

10. Now draw some jharokha patterns on the wall here. You can shade it black.

Ans. The Jharoka is a stone window that is projecting from the wall of the building. To draw the jharoka pattern and shade them in black.

Hence the wall with jharoka pattern has been drawn.

11. Where else have you see an arch?

Ans. An arch is a typically curved structure that will function as an opening and provides structural support.

It can be seen in many places.

But I have seen the arch in the bridges, rainbow and so on .

12. Which of these bricks have curved edges?

Ans. Curved edges refer to the edges that are rounded in the edges. So, observe the rounded edge of the bricks from the diagram.

The bricks in the left corner have the curved edge and the image of that bricks is given.

How many do you see of the longest brick?

Ans. The longest brick is in the front side. Only two of six faces is observed by me.

Thus only two faces of the longest brick is seen.

Is there any brick which has more than six faces?

Ans. Generally bricks are of cuboid shape and consist of only six faces. So bricks cannot have more than six faces.

13. Take one brick and measure it.

(a) How long is it?

Ans. Take a brick.

Measure the length of the brick with the ruler. The length of the brick is about 20 cm.

(b) How wide is it?

Ans. Take a brick.

Measure the width of the brick with the ruler. The width of the brick is about 8 cm.

(c) How high is it?

Ans. Take a brick.

Measure the height of the brick with the ruler. The height of the brick is about 1 cm.

14. Muniya wants to make a wall 1 meter long. How many bricks will she need to put in a line.

Ans. Consider the length of the brick to be 20 cm

Muniya needs to build a wall of 1 m

We know that 1 m=100 cm

We need n number of bricks of 20 cm to build a 100 cm wall. Thus, 20n 100

n = 100/20

n = 5

Hence 5 bricks are required to build a wall of 1m in a line.

15. Can you guess how high is the chimney here? Is it.

(a) about 5 meters

(b) about 15 meters

(c) about 50 meters

Ans. We know that the length of the brick is about 20 cm.

From the height of the chimney, we know that the height of the chimney is very high.

So we can conclude that the chimney is about 50 meters tall.

16. Here are four pictures from the bricks kiln. These pictures are jumbled up. Look at them carefully. Write the correct order.

Ans. The bricks are made from the following process,

• Collecting the mud

• Made mud into small parts.

• Separate the mud leaving some spaces between them.

• Finally arranging them one above the other. The order given above follows.

 

Thus the correct sequence of the picture form brick is C, D, B, A

17. Mental Math. Bhajan buys Bricks. Bhajan went to buy bricks The price was given for one thousand bricks. The prices were also different for different types of bricks.

Bhajan decided to buy the new bricks form Brickabad. He bought three thousand bricks. How much did he pay?

Ans. Since Bhajan decided to buy bricks from Brickabad, Cost of one thousand bricks Rs.2000

Cost of 3 thousand bricks 3 2000

Rs.6000

The cost of three thousand bricks from Brickabad is Rs.6000

Guess what he will pay if he buys 500 bricks.

Ans. Bhajan buys 500 old bricks in this case. Cost of 1000 bricks Rs.1200

Cost of 500 bricks = 1200/2

Rs. 600

Thus the cost of 500 old bricks are Rs. 600