हिंदी

How much lace will be left in the roll? - Mathematics

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प्रश्न

How much lace will be left in the roll?

योग
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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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Fields and Fences
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 13: Fields and Fences - Exercises [पृष्ठ १५२]

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एनसीईआरटी Math - Magic [English] Class 4
अध्याय 13 Fields and Fences
Exercises | Q 7 | पृष्ठ १५२

संबंधित प्रश्न

Rahmat needs to find the length of the boundary of the field.

Can you find it from this picture? See the length of each side written near it.


How much more wire will Ganpat need for his field?


Here are pictures of some more fields. Find out which one has the longest boundary?




  1. Boundary = ______ metre


  2. Boundary = ______ metre


  3. Boundary = ______ metre


  4. Boundary = ______ metre

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 : 

  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?

A hockey held is 91 metres 40 cm long and 55 metres wide. How long is the boundary of the held?


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)

  1. Write your guess here.
  2. Now check if your guess was right. How many books could you place?
  3. What is the difference between your guess and the actual number of books?

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. How many Math-Magic books can be covered with one sheet of newspaper?
  2. Try covering your Math-Magic book with half a sheet of newspaper.
  3. Can you cover your book with a smaller sheet?
  4. Find the smallest sheet which can cover your book. Check if your friend used a smaller sheet than you.

  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.

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