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# ધોરણ - 4 ગણિત - ગમ્મત પ્રકરણ - 2 લાંબું અને ટૂંકું NCERT Class 4 Maths Chapter 2 Long and Short quiz 2

### NCERT Class 4 Maths Chapter 2 Long and Short Solutions

NCERT book Page No: 14

Question: 1

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

Answer: Birbal drew a longer line than the line drawn by the Akbar.

Question: 2

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

Question: 3

Draw a cup 1 cm shorter than this cup.

Answer: The cup drawn is 1 cm shorter than the given cup

Question: 4

Draw a broom half as long as this broom.

Answer: A broom half of the size of broom given in figure is drawn below

Question: 5

Draw another hair of double the length.

Answer: Hair of double length is drawn below

NCERT book Page No: 15

How Tall Have You Grown?

Question: 6

Do you remember that in Class 3 you measured your height?

Answer: Yes, I measured my height in Class 3

Question: 7

Do you think you have grown taller?

Answer: Yes, I have grown taller

Question: 8

How much?

Question: 9

Have your friends also grown taller?

Answer: Yes, most of them have grown taller

Question: 10

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.

Answer: Height of the tallest person = 272 cm

Which is double than Jhumpa’s height

So,

272 ÷ 2 = 136 cm

Hence, Jhumpa’s height is 136 cm

Question: 11

Could that person pass through the door of your classroom without bending?

Answer: Since, the door of the classroom is 230 cm high. So, the person cannot pass through it without bending.

Question: 12

Will his head touch the roof of your house if he stands straight?

Answer: Yes, because the height of my classroom is 310 cm

The Long and Short of Your Family!

Question: 13

Who is the tallest in your family?

Answer: My father is the tallest in my family. His height is 174 cm

Question: 14

Who is the shortest in your family?

Answer: My brother is the shortest in my family. His height is 93 cm

Question: 15

What is the difference between their heights?

Answer: The difference between their heights is 81 cm

NCERT book Page No: 16

Race

Question: 16

(a) How far is Rehana from Arundhati?

Answer: The distance of Rehana from Arundhati is 3 metres.

(b) How far ahead is Rehana from Konkana and Uma?

(c) How far are Konkana and Uma from the finishing line?

Answer: Konkana and Uma are 15 metres far from the finishing line

Question: 17

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.)

(a) In a 1500 metres race people run ______ km

Answer: In a 1500 metres race people run one and half km

(b) In a 3000 metres race people run _______ km

Answer: In a 3000 metres race people run 3 km

NCERT book Page No: 17

Question: 18

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.

(a) 10 rounds of a stadium track = ________ km

Answer: 10 rounds of a stadium track = 400 metres × 10

= 4000 metres

= 400 ÷ 1000

= 4 km

So, 10 rounds of a stadium track = 4 km

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

Answer: The number of rounds to be completed

= (40 × 100) ÷ 100

= 4000 ÷ 100

= 10

Hence, you have to complete 10 rounds on a stadium track

Question: 19

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.

How long are Gurjeet’s and Gopi’s jumps?

Answer: Gurjeet’s jumps = Dhanu’s jump – 20 cm

= 3 metres 40 cm – 20 cm

= 3 metres 20 cm

Therefore, Gurjeet’s jump is 3 metres 20 cm

Gopi’s jump = Gurjeet’s jumps – 5 cm

= 3 metres 20 cm – 5 cm

= 3 metres 15 cm

Therefore, Gopi’s jump is 3 metres 15 cm

Question: 20

Find out from the table

1. How many centimetres more should Chandra Pal jump to equal the Men’s World Record for high jump?

1 m = 100 cm

Given

Men’s world record for high jump = 2 m 45 cm

= 2 × 100 + 45 cm

= 200 cm + 45 cm

= 245 cm

High jump record of Chandra Pal = 2 m 17 cm

= 2 × 100 + 17 cm

= 200 cm + 17 cm

= 217 cm

Now, subtract 217 from 245, we get

245 – 217 = 28 cm

Hence, to equal the men’s world record for high jump, Chandra Pal need to jump 28 cm more.

2. How many centimetres higher should Bobby A jump to reach 2 metres?

Remember that 1 m = 100 cm

Half metre =?

Answer: Bobby A, high jump record = 1 m 91 cm

= 1 × 100 + 91 cm

= 191 cm

Required centimetres to reach is 2m

So,

= 2 × 100

= 200 cm

Thus,

200 – 191 = 9 cm

Therefore, Bobby A should jump 9 cm higher to reach 2 metres

3. Galina’s long jump is nearly

(a) 7 metres

(b) 7 and a half metres

(c) 8 metres

Answer: Galina’s long jump record is 7 m 52 cm

Hence, it is nearly 7 and half metres,

Therefore option (b) is correct

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

Answer: Women’s World record for high jump = 2 m 9 cm

Women’s World record for long jump = 7 m 52 cm

So, difference between them is

= 7 m 52 cm – 2 m 9 cm

= 5 m 43 cm

5. If Mike P, could jump _______ centimetres longer, his jump would be full 9 metres.

Answer: Mike P long jump record = 8 m 95 cm

To reach 9 metres = 9 m – 8 m 95 cm

= 5 cm

Therefore, if Mike P jump 5 cm longer, his jump would be full 9 metres

6. Whose high jump is very close to two and half metres?

(a) Stefka K.

(b) Chandra Pal

(c) Javier S.

(d) Bobby A.

Answer: Javier S high jump is 2 m 45 cm. So, his jump is very close to two and half metres.

NCERT book Page No: 19

Question: 21

* How many rounds of the park must Devi Prasad run to complete 2 km?

1 km = 1000 m

So,

2 km = 2000 m

Hence, to complete 2000 m, Devi Prasad must complete

= 2000 m ÷ 400 m

= 5 rounds

Therefore, Devi Prasad has to complete 5 rounds of the park

* 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!

Answer: Distance covered to complete one round of the park = 400 m

So, distance covered by Devi Prasad to complete 8 rounds of the park = 400 m × 8

= 3200 m

We know,

1000 m = 1 km

Therefore, 3200 m = 3000 m + 200 m

3000 m = 3000 ÷ 1000

= 3 km 200 m

Hence, Devi Prasad ran 3 km 200 m to complete 8 rounds of the park

NCERT book Page No: 20

From Kozhikode to Thalassery

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.

Question: 22

How far is Kozhikode from Thalassery? ________

= Kozhikode distance + Thalassery distance

= 24 km + 46 km

= 70 km

Question: 23

*How much does Momun walk every day to reach school? ________

Answer: Total distance of school from Momun home = 400 m + 150 m + 350 m + 40 m

= 940 m

Therefore, Momun has to walk 940 m every day to reach school

* Is it more than 1 km? ________

Answer: Since, 940 m is less than 1000 m

Therefore, it is not more than 1 km

Question: 24

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

Answer: Following are the list of distance of school from their home

 Friends Name Distance of home from school Sohail 500 m Amit 2 km 100 m Alok 1 km 400 m Sanjeev 1 km 100 m Rohit 5 km 400 m Rahul 2 km 400 m

* Who among you lives nearest to the school?

Answer: A person who lives nearest to the school is Sohail

* Who lives farthest from the school?

Answer: A person who lives farthest from the school is Rohit

* How many children live less than 1 km away from your school?

Answer: Me and Sohail. That means total two children lives less than 1 km away from school

* Is there anyone who lives more than 5 km away from the school?

Answer: Yes, Rohit lives more than 5 km away from the school

* How do they come to school?

Answer: They come to the school by school bus.

Guess and Find Out

Question: 25

How long is the thread in a reel?

Answer: The length of thread can be measured depending on the thickness of reel.

It may be 60 metres, 90 metres, 100 metres or 400 metres or more

Question: 26

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

Answer: A kite reel can be more than a kilometre long. It may be 500 metres, 900 metres, 1000 metres long.

Question: 27

NCERT book Page No: 22

Try to find out:

Question: 28

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

Answer: The highest building that I saw is Qutub Minar. It is about 25 rooms high

Question: 29

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

Answer: Yes, a kite can go higher than the Qutub Minar. It may go about 100 metres high.

Question: 30

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

Answer: A plane can fly more than 10000 metres high. Yes, it can fly higher than the Mount Everest which is about 9 km high.

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