NCERT solutions for Math - Magic [English] Class 4 chapter 2 - Long and Short [Latest edition]

1. Guess the distance between any two dots. How many centimetres is it? Now measure it with the help of a scale. Did you guess right?
2. Which two dots do you think are farthest from each other? Check your answer.
3. Which two dots are nearest to each other? Check your answer.

Akbar was a famous king. He had a smart minister called Birbal. Once Akbar gave him a difficult question. He drew a line on the floor.

Look at the picture and explain how Birbal made Akbar's line shorter.

Try This.

Make her right arm 1 cm longer than the left arm.

Try This.

Draw a cup 1 cm shorter than this cup.

Try This.

Draw a broom half as long as this broom.

Try This.

Draw another hair of double the length.

Jhumpa once read a list of the tallest people in the world. One of them was 272 cm tall! That is just double of Jhumpa's height. How tall is Jhumpa? _____ cm.

Imagine-

1. Could that person pass through the door of your classroom without bending?
2. Will his head touch the roof of your house if he stands straight?

The Long and Short of Your Family!

1. Who is the tallest in your family? _____
2. Who is the shortest in your family? _____
3. What is the difference between their heights? _____

This is a 100 metre race for girls. Arundhati is nearest the finishing line. She is about 6 metres from it.

Behind her is Rehana. Konkana and Uma are running behind Rehana. Look at the picture. To answer the question below:

How far is Rehana from Arundhati?

This is a 100 metre race for girls. Arundhati is nearest the finishing line. She is about 6 metres from it.

Behind her is Rehana. Konkana and Uma are running behind Rehana. Look at the picture. To answer the question below: 

How far ahead is Rehana from Konkana and Uma?

This is a 100 metre race for girls. Arundhati is nearest the finishing line. She is about 6 metres from it.

Behind her is Rehana. Konkana and Uma are running behind Rehana. Look at the picture. To answer the question below:

How far are Konkana and Uma from the finishing line?

Have you heard about a 1500 m or 3000 m race? (You remember that 1000 metres make 1 kilometre and 500 metres make half a kilometre.)

So you can say -

In a 1500 metres race people run ______ km.

Have you heard about a 1500 m or 3000 m race? (You remember that 1000 metres make 1 kilometre and 500 metres make half a kilometre.)

So you can say -

In a 3000 metres race people run ______ km.

Have you heard about marathon races in which people have to run about 40 kilometres? People run marathons on roads because the track of a stadium is only 400 metres.

10 rounds of a stadium track = _____ km

Have you heard about marathon races in which people have to run about 40 kilometres? People run marathons on roads because the track of a stadium is only 400 metres.

So, if you run a marathon on a stadium track, you will have to complete ______ rounds!

This is the long jump for boys.

Dhanu has the longest jump of 3 metres 40 cm. Gurjeet is second. His jump is 20 cm less than Dhanu's. Gopi comes third. His jump is only 5 cm less than Gurjeet's jump.

1. How long are Gurjeet's and Gopi's jumps?
2. Try and see how far you can jump.
3. How far can you throw a ball?
4. Look for a big ball, like a football or volleyball. How far can you kick it?

Here are the Indian Records and World Records for some jumps.

Find out from the table -

How many centimeters more should Chandra Pal jump to equal the Men's World Record for the high jump?

Here are the Indian Records and World Records for some jumps.

Find out from the table -

How many centimeters higher should Bobby A. jump to reach 2 meters?

[Remember that 1m = 100 cm
Half metre = ?]

Here are the Indian Records and World Records for some jumps.

Find out from the table -

Galina's long jump is nearly ______.

Here are the Indian Records and World Records for some jumps.

Find out from the table -

Look at the Women's World Records. What is the difference between the longest jump and the highest jump?

Here are the Indian Records and World Records for some jumps.

Find out from the table -

If Mike P. could jump ______ centimeters longer, his jump would be full 9 meters.

Here are the Indian Records and World Records for some jumps.

Find out from the table -

Whose high jump is very close to two and a half meters?

Running Exercise

The doctor has told Devi Prasad to run 2 km every day to stay fit. He took one round of this field. How far did he run?

The field was very far from his home. So he chose a park nearby. The boundary of the park was about 400 metres long.

1. How many rounds of the park must Devi Prasad run to complete 2 km?
2. One day the weather was very good and a cool breeze was blowing. He felt so good that he kept jogging till he got tired after 8 rounds. That day he ran ____ km and ____ metres!

The Qutab Minar is 72 meters high.

1. About how many meters high is your classroom?
2. Guess how many rooms, one on top of the other, will be equal to the Qutab Minar.
3. Explain how you made a guess.

Subodh is going to Kozhikode which is 24 kilometres (km) away. Manjani is going to Thalassery which is 46 km away in the opposite direction.

How far is Kozhikode from Thalassery?

Momun comes to school from very far. He first walks about 400 metres to the pond. With slippers in his hands, he then walks 150 metres through the pond. Next he runs across the 350 metres wide green field. Then he carefully crosses the 40 metres wide road to reach his school.

1. How much does Momun walk every day to reach school?
2. Is it more than 1 km?

Find out how far your friends live from school and fill the table. Write in meters or kilometers.

1. Who among you lives nearest to the school?
2. Who lives farthest from the school?
3. How many children live less than 1 kilometer away from your school?
4. Is there anyone who lives more than 5 km away from the school? How do they come to school?

Guess and Find Out

How long is the thread in a reel?

Guess and Find Out

How long is the string of a kite reel? Can it be more than a kilometer long?

Guess and Find Out

If a handkerchief is made out of a single thread, how long would that thread be?

Try to find out:

Which is the highest building that you have seen? About how many rooms high was it?

Try to find out:

How high can a kite go? Can it go higher than the Qutab Minar?

How high can a plane fly? Can it fly higher than Mount Everest which is about 9 km high?

Have you ever seen clouds below you?