Chapter 13: Fields and Fences

Q1Written answer

Look at the table in your classroom. Guess how many Math-Magic books you can place on it. (Remember – The books should not overlap. Do not leave gaps between the books.)

(a) Write your guess here.

(b) Now check if your guess was right. How many books could you place?

(c) What is the difference between your guess and the actual number of books?

NCERT Solutions for Class 4 Chapter 13 Image 24

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Worked solution

(a) 8 Math-Magic books can be placed on the table.

(b) 8 Math-Magic books can be placed on the table.

(c) The difference between your guess and the actual number of books is zero.

Q2Written answer

Now look for another table.

(a) Is this table bigger than the last table? Yes/ No

(b) Make a guess how many Math-Magic books can be kept on this table.

(c) Check if your guess was correct.

How many Math-Magic books could you keep?

(d) The difference between the sizes of the two tables is ____ books.

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Worked solution

(a) Yes. This table is bigger than the last table.

(b) 12 Math-Magic books can be kept on this table.

(c) 10 Math-Magic books could be kept on the table.

(d) The difference between the sizes of the two tables is 2 books.

Q3Written answer

(a) How many Math-Magic books can be covered with one sheet of newspaper?

(b) Try covering your Math-Magic book with half a sheet of newspaper.

(c) Can you cover your book with a smaller sheet?

(d) Find the smallest sheet which can cover your book. Check if your friend used a smaller sheet than you did.

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Worked solution

(a) 4 Math-Magic books can be covered with one sheet of newspaper.

(b) Should be done by the students.

(c) Yes, we can cover the book with a smaller sheet.

(d) Should be done by the students.

NCERT Textbook Page No. – 159

Q4Written answer

(a) Which is the biggest leaf in this picture?

(b) Collect some leaves from the garden. Place each of them here on this squared sheet. Trace out their edges and check how many squares there are in each leaf.

(c) Which is the biggest leaf?

(d) Which is the smallest leaf?

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Worked solution

(a) The biggest leaf in this picture is the leaf in the middle from the top.

(b) Should be done by the students.

(c) Should be done by the students.

(d) Should be done by the students.

NCERT Textbook Page No. – 160

Q5Written answer

(a) How many small squares of size 1 cm are there in this big green square?

(b) Can you think of a faster way to know the total number of small squares without counting each?

NCERT Solutions for Class 4 Chapter 13 Image 26

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Worked solution

(a) 36 small squares of size 1 cm are there in this big green square.

(b) We know that 6 small squares are present at the sides of the big square.

Total number of small squares = 6 × 6 = 36

Q6Written answer

Guess how many squares of one centimetre can fill this blue rectangle.

Write your guess here.

Check your guess by filling it with small squares.

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Worked solution

Here, 32 small squares can fill this blue rectangle.

NCERT Solutions for Class 4 Chapter 13 Image 28

There are 32 squares, and the guessed answer is right.

Q7Written answer

Look at the picture. Can you divide it into 4 equal pieces? Each piece should have the same number of squares.

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Worked solution

Yes we can divide the picture into 4 equal pieces.

NCERT Solutions for Class 4 Chapter 13 Image 30

NCERT Textbook Page No. – 161

Puzzle: A House and the Well

Raghavan has a piece of land.

There are 4 houses on his land, and in the middel there is a well. He wants to divide this land equally among his four children. Each should get one house and be able to use the well without entering other’s land. Can you help him divide the land?

Give different colours to each one’s share.

NCERT Solutions for Class 4 Chapter 13 Image 31

The picture below shows how the land can be divided equally among the four children so that each one gets one house and is able to use the well without entering the other’s land.

NCERT Solutions for Class 4 Chapter 13 Image 32

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