English

You can play this game on the ground. Make two squares of one square meter each. Divide your class into two teams. Ready to play! Which team could make more children sit in their square? How many?

Advertisements
Advertisements

Question

You can play this game on the ground. Make two squares of one square meter each. Divide your class into two teams. Ready to play!

  • Which team could make more children sit in their square? How many?
Short/Brief Note
Advertisements

Solution

Team A could make four children sit in their square.

Measure the length of the floor of your classroom in metres.

Also measure the width.

Length = 10 m and width = 8 m 

shaalaa.com
  Is there an error in this question or solution?
Chapter 11: Area and its Boundary - Area and its Boundary [Page 151]

APPEARS IN

NCERT Math - Magic [English] Class 5
Chapter 11 Area and its Boundary
Area and its Boundary | Q A) 4. | Page 151

RELATED QUESTIONS

Write true or false.

Every measurement involves two things – a number and a unit.


What are the S.I. units of

  1.  mass
  2.  length
  3.  time and
  4.  temperature.

Write their names and symbols.


Match the following.

 Column A   Column B
(1) Length  a. kilogram
(2) Mass  b. cubic metre
(3) Area  c. metre
(4) Volume  d. square metre

500 gm = ______ kilogram.


Match the following.

1. Length kelvin
2. Mass metre
3. Time kilogram
4. Temperature second

Which line is longer? C or D? Measure each line. How good is your guess?


Now guess the length and width of many other things. Measure and find the difference between your measure and your guess.

Size of Your guess in cm Your measure in cm
  Length Width Length Width
100 Rupee note        
10 Rupee note        
20 Rupee note        
5 Rupee note        
Post card        
Math-Magic book        

Difference in size
Do this for yourself and find the difference.


Can you think of how to cut a postcard so that you can pass through it?


You can play this game on the ground. Make two squares of one square meter each. Divide your class into two teams. Ready to play!

  • How many of you can stand in it?

There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.

  • How many kilometers long is the actual boundary of lake A?

The distance between one end and the other end is called ______.


Length is ______.


The Unit used to measure length ______.


SI unit of electric current is ______.


Yard was used as the unit of length.


The radius of atom is of the order of 1 Å and the radius of nucleus is of the order of fermi. How many magnitudes higher is the volume of atom as compared to the volume of nucleus?


The distance of a galaxy is of the order of 1025 m. Calculate the order of magnitude of time taken by light to reach us from the galaxy.


In an experiment to estimate the size of a molecule of oleic acid 1 mL of oleic acid is dissolved in 19 mL of alcohol. Then 1 mL of this solution is diluted to 20 mL by adding alcohol. Now 1 drop of this diluted solution is placed on water in a shallow trough. The solution spreads over the surface of water forming one molecule thick layer. Now, lycopodium powder is sprinkled evenly over the film and its diameter is measured. Knowing the volume of the drop and area of the film we can calculate the thickness of the film which will give us the size of oleic acid molecule.

Read the passage carefully and answer the following questions:

  1. Why do we dissolve oleic acid in alcohol?
  2. What is the role of lycopodium powder?
  3. What would be the volume of oleic acid in each mL of solution prepared?
  4. How will you calculate the volume of n drops of this solution of oleic acid?
  5. What will be the volume of oleic acid in one drop of this solution?

What is an Astronomical Unit (AU)?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×