मराठी

How many small squares of size 1 cm are there in this big green square? Can you think of a faster way to know the total number of small squares without counting each. - Mathematics

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प्रश्न

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


  2. Can you think of a faster way to know the total number of small squares without counting each.
संख्यात्मक
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उत्तर

  1. There are 36 small squares of size 1 cm in this big square.
  2. There are six small squares at all sides of the big square.
    So, total number of small square = 6 × 6 = 36 
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Fields and Fences
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 13: Fields and Fences - Exercises [पृष्ठ १६०]

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एनसीईआरटी Math - Magic [English] Class 4
पाठ 13 Fields and Fences
Exercises | Q 5. | पृष्ठ १६०

संबंधित प्रश्‍न

Ganpat thanked Rahmat and started fencing his own field. But he needed to get more wire.

How long is the boundary of Ganpat’s field?


Chandu’s father is called the ‘young  old man’ in his village. At 70 years of age, he is fully fit. Do you know his secret? He goes for a walk around the field every morning. Everyday he takes four rounds of Chandu’s field.

What is the total distance he covers?

4 × ______ = ______ m = ______ km


Ganpat’s wife works in a tailor’s shop. She has to fix lace around a table cloth.

She bought a 100 metre roll of lace.

Look at the picture of the table cloth and tell how much lace is used for one table cloth.


Find out the length of the boundary of these shapes. (Hint: You can use a thread)

Now count the squares to find out : 

  1. How many squares are there in each shape?
  2. Which shape covers the least number of squares?
  3. Which shape covers the most number of squares?

Take a 20 centimetre long thread. Make different shapes by joining the ends. Place on the squared sheet on the next page. 

find Out :

  1. How many squares are there in each shape?
  2. Which is the biggest shape?
  3. Which is the smallest shape?
  4. How long is the boundary of each shape?

  1. Find the length of the boundary of square D.
  2. 8 squares of side 1 cm are cut out of the square D. Now it looks like shape E. What is the length of the boundary of shape E?
     
  3. The boundary of this    is ______ + ______ + ______ + ______
    Can we also say that the boundary is 4 × 1 cm?

Usha and Valsamma are running a race. Usha is running on the inner circle. Valsamma is running on the outer circle.

  1. Valsamma runs faster than Usha. But still she loses the race. Can you guess why?
  2. Have you seen any race where runners start from different places – like in this picture? Guess why?

Now look for another table.

  1. Is this table bigger than the last table? Yes/No
  2. Make a guess how many Math-Magic books can be kept on this table.
  3. Check if your guess was correct.
    How many Math-Magic books could you keep?
  4. The difference between the sizes of the two tables is ______ books.

  1. Which is the biggest leaf in this picture?
  2. 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.
  3. Which is the biggest leaf?
  4. Which is the smallest leaf?

Raghavan has a piece of land.

There are 4 houses on his land and in the middle 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 the, other’s land. Can you help him divide the land?

Give different colours to each one’s share.


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