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

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.

• Find the area of lake B on the drawing in square cm. What is its actual area in square km?

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?

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.

• How can Ganesh and Dinga test their guesses before packing the cubes in the boxes? Discuss with your friend.

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.

Use Ganesh's method and write:

• _____ centimeter cubes can be arranged in box B.
• _____ centimeter cubes can be arranged in box C.
• So _____ centimeter cubes in all can be packed in the three boxes.

Jincy used these shapes to make drawings of fish. 

Now you also use some shapes to draw the different sea animals shown below.

Sea urchin

Lobster

Eel

Red snapper

Octopus

Clam

Parrotfish

Prawn

Cuttlefish

Jellyfish

Squid

Silver pomfret

Crab

Whose footprint is larger - yours or your friend’s?

How will you decide? Discuss.

Is the area of both your footprints the same?

The green part of the flag can be written as ______

Is red less than one-third of the flag? Why?

How many times longer is your big fish than the smallest fish?

Measure the side of the red square on the dotted sheet. Draw here as many rectangles as possible using 12 such squares.

How many rectangles could you make?

Chocolate Bar
Manju had chocolate. She gave one-fourth of it to Raji, one-third to Sugatha, and one-sixth to Sheela. She ate the remaining part. How many pieces of chocolate did each get? Write here.

What part of the chocolate did Manju eat?

Colour the Hats

Colour `1/3` of the hat's red.
Colour three-fifth of hats blue.

How many hats did you colour red?

Colour the Hats

Colour `1/3` of the hat's red.
Colour three-fifth of hats blue.

How many hats did you colour blue?

Colour the Hats

Colour `1/3` of the hat's red.
Colour three-fifth of hats blue.

What parts of the hats are not coloured?

Equal Parts of a Triangle

Now try to make three equal parts of this triangle in a different way. Colour each one third with a different colour.

Equal Parts of a Triangle

The white triangle is divided into three equal parts. Fill each one-third part with a different colour. Can you show that these parts are equal? Think how.

Six parts of a Rectangle

Rani has divided a green rectangle into six equal parts like this.

Now you divide each of these rectangles into six equal parts. Use a different way for each of the three rectangles.

How will you check that each part is really one-sixth of that rectangle?