Secondary School (English Medium) (5 to 8) कक्षा ५ - CBSE Question Bank Solutions for Mathematics

So Anar also tried many different ways to make a boundary for 800 square meters of land.

He made rectangles A, B, and C of different sizes. Find out the length of the boundary of each. How much gold wire will he get for these rectangles?

• A 
  Gold wire for A = _________ metres
• B 
  Gold wire for B = _________ metres
• C  
  Gold wire for C = __________ metres

But then Anar made an even longer rectangle... See how long!

• D 
  So he will get __________ metres of gold wire!!

Practice time: Afterschool

Ask 10 of your friends about what they like to do most after school.

Try yourself

On any one day, choose any three cities and record their temperature from the TV or newspaper.

• Make a bar chart in your notebook and ask your friends a few questions about it. See if they understand your chart!

Karunya bought three fields.

Find the area of all three fields.

• Field (A) ____________ square metre.
• Field (B) ____________ square metre.
• Field (C) ____________ square metre.

Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.

• A shopkeeper has 50 boxes. There are 48 fruits in one box.
  Tick the one question which matches with the given problem.
  

  a)	How much will the shopkeeper pay in all?
  b)	How many fruits are there in all?	✓
  c)	How many more boxes will he need?

  Explain why (a) and (c) are not good choices.

Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.

• 352 children from a school went on a camping trip. Each tent had a group of 4 children.
  

  a)	How many children did each tent have?
  b)	How many tents do they need?
  c)	How many children in all are in the school?

Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.

• A shopkeeper has 204 eggs. He puts them in egg trays. Each tray has 12 eggs.
  

  a)	How many more eggs will he need?
  b)	How many fresh eggs does he sell?
  c)	How many egg trays does he need?

Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.

• The cost of one book is Rs 47. Sonu buys 23 books.
  

  a)	How much money does she have?
  b)	How much money does she pay for the books?
  c)	What is the cost of 47 books?

How long is the side of your cube? ______

How many centimetre cubes can be arranged along its:

Length? ______

Width? ______

Height? ______

Answer Thimpu's questions:

• To make the first layer on the table how many cm cubes will I use? ______
• How many such layers will I need to make a cube? ______

So the total cm cubes = ______

The volume of the paper cube is same as __________ cm cubes.

Anan made a big cube having double the side of your paper cube. How many of your paper cubes will fit in it? Try doing it by collecting all the cubes made in your class.

Ganesh and Dinga want to pack 4000-centimeter cubes inboxes. These are to be sent to a school. There are three different boxes available for packing.

• What is your guess? Who is right?

Measure the length of the floor of your classroom in meters. Also measure the width.

• If you want to move around easily then how many children do you think should be there in one square meter?

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.

• What is the length of the boundary of lake B in the drawing?

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?

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 B?

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.

• A longer boundary around the lake will help more birds to lay their eggs. So which lake should be kept for birds? Which lake should be used for boats?