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प्रश्न
How much lace will be left in the roll?
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उत्तर
Total length of lace = 100m
Lace used to make 3 table cloths = 12m
Lace left after making of 3 table cloths = 100m – 12m = 88m
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संबंधित प्रश्न
How much lace will be used in 3 such table cloths?
Find out the length of the boundary of these shapes. (Hint: You can use a thread)

Now count the squares to find out :
- How many squares are there in each shape?
- Which shape covers the least number of squares?
- 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 :
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- Which is the biggest shape?
- Which is the smallest shape?
- How long is the boundary of each shape?
- How many different shapes can you make by joining two squares? Draw them on the squared sheet given below. How long is the boundary of each shape?

- Try this activity with three squares also.
- Find the length of the boundary of square D.
- 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?


- The boundary of this
is ______ + ______ + ______ + ______
Can we also say that the boundary is 4 × 1 cm?
How will Neetu find out if the two gardens are equally big?
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)
- Write your guess here.
- Now check if your guess was right. How many books could you place?
- What is the difference between your guess and the actual number of books?
Now look for another table.
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- Make a guess how many Math-Magic books can be kept on this table.
- Check if your guess was correct.
How many Math-Magic books could you keep? - The difference between the sizes of the two tables is ______ books.
- 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.
Look at the picture. Can you divide it into 4 equal pieces? Each piece should have the same number of squares.

