NCERT solutions for Math - Magic [English] Class 4 chapter 9 - Halves and Quarters [Latest edition]

If the cats ask you to divide the chapati equally, how will you divide it?

If two more cats come for food, how will you divide one chapati equally for four cats?

Rani got a chocolate. She divided it equally and gave half to her friend Reena.

Circle the portion that Reena got.

How many pieces of chocolate are there?

How many pieces were left with Rani?

Draw different shapes using these triangles. One such shape is shown here.

In how many different ways can you cut a rectangle into half? Draw 5 different ways. Can you check if they are equal?

In how many different ways can you cut a rectangle into four equal parts? Draw 5 different ways.

Can you check if they are equal?

Colour each share with different colours.

How much does each get?

Mother gave her share of cake to Rajni. Now colour the total part that Rajni will get.

Out of 4 parts Rajni will get ______  parts, which is equal to half of the cake. So she can write it as ` /4` or `1/2`.

Colour the share Raju got.

How much of the cake do Rajni and Raju together get? Colour their total share.

Altogether they get 3 parts out of 4, so we can write it as `3/4`.

One day he wants to eat pumpkin halwa (sweet dish). He tries to buy a big pumpkin with only Rs 10. He asks the first pumpkin seller the price of a big pumpkin.

First pumpkin-seller - `1/4` of this pumpkin is for Rs 10.

This full pumpkin will cost Rs ______.

Kundu walks to the next seller and looks for a pumpkin of the same size.

Kundu — How much of this pumpkin will I get for Rs 10?

Second pumpkin - seller — Half.  This full pumpkin will cost Rs ______.

How much does `1/2` kg of tomatoes cost?

Which costs more - `1/2` kg of onions or `1/4` kg of carrots?

What is the price of `3/4` kg of potatoes?

Keerthi is going for shopping. She has only Rs 20 with her. Can she buy all the things in her shopping list?

Make two questions yourself from the price list.

What part of the whole is coloured? Write below each shape.

______	______

Colour that part of the shape which is written below:

`1/2`	`3/4`	`3/4`	`1/4`	`1/2`	`3/4`

Draw a line which divides these shapes into half.

Colour half the number of shapes as shown here -

Colour `1/4` of these shapes.

Match the coloured part as shown.

`1/2` of the picture is drawn here. Can you complete the picture by drawing the other half?

This is a quarter of a picture. Can you complete it? How many more quarters will you draw to complete it? 

Using your metre scale, cut a string of one metre.

On this string, mark the length `1/2` metre, `1/4` metre and `3/4`metre. 

Using your string, draw a line of length `1/2` metre on the floor. How many centimetres long is the line?

 So,
`1/2` metre = ______ cm
`1/4` metre = ______ cm
`3/4` metre = ______ cm
Can you see that when we add `1/2` and `1/4` we get `3/4`?

This bottle is full of milk and it holds one litre. The milk is put into 4 other bottles so that each bottle has `1/4` litre of milk.
Shade the bottles to show the level of milk in each.

Remember, 1 litre = 1000 mililitres

Shan poured 1 litre of milk into two bottles so that the first bottle holds `3/4` litre and the other holds `1/4` litre.

1. Shade the level of milk in each bottle.
2. How many millilitres of milk does each bottle hold?

Choose from the weights above to make the two pans equal. In how many ways can you do it?

Draw the weights in the empty pan. Remember, 1kg = 1000 g  

In how many different ways can you balance this weight of `3/4` kg?

1. ______
2. ______
3. ______ 

Kannan shaded some parts as shown. But his friend Mini says that it is wrong. Explain why it is wrong.

There are 60 mangoes. `1/2` of them are ripe. How many mangoes are ripe?

There are 32 children. `1/2` of them are girls. How many children are boys?

There are 20 stars. A quarter of them are red. How many stars are red? How many stars are not red?

Ravi wants a pencil. It costs Rs 2. He gives a one-rupee coin, one half-rupee coin and one quarter-rupee coin. Is it enough?