Practicing with Maths Mela Class 4 Solutions Chapter 7 The Cleanest Village Question Answer NCERT Solutions improves a student’s confidence in the subject.
Class 4 Maths Chapter 7 The Cleanest Village Question Answer Solutions
The Cleanest Village Class 4 Maths Solutions
Class 4 Maths Chapter 4 Solutions
Daisy and Lou Go Shopping (NCERT Pg 96-98)
Question 1.
Sapan Dada has a cart for selling vegetables and fruits. The prices of the vegetables and fruits are given below.
Sapan Dada asks Daisy and Lou to find the costs of different quantities of fruits and vegetables. Help them to complete the tasks. You may use a number line, play money or any other method to calculate.
(i)
(ii) Their mother buys things for ₹ 163 . What might she have bought? Is there more than one possibility?
(iii) Udaya Didi runs a store selling rice, atta, daal and spices. Daisy and Lou help Udaya didi return the balance to customers while their mother buys the groceries. Udaya didi also asks them some tricky questions. Help them find the missing numbers in each of the following. Use a number line, play money or any other way to find the balances.
(iv) Lou and Daisy buy 3 kg bananas to eat on the way with their friends. Which of the following options can they use to buy the bananas?
Answer:
(i) (a) Given, cost of 1 kg beans =₹ 95
∴ Cost of 2 kg beans =₹ 95 × 2=₹ 190
(b) Total cost of 1 kg custard apple and 1 kg of sapota =₹ 45+₹ 70=₹ 115
(c) Total cost of 1 kg of onion and 1 kg of potato =₹ 32+₹ 37=₹ 69
(d) Total cost of 1 kg of radish and 1 kg of yam =₹ 23+₹ 45=₹ 68
(e) Given, cost of 1 kg of radish =₹ 23 and cost of 1 kg of papaya =₹ 65
∴ Total cost of 2 kg of radish and 2 kg of
papaya =₹ 23 × 2+₹ 65 × 2
=₹ 46+₹ 130=₹ 176
(f) Given, cost of 1 kg of onion $=₹ 32 and cost of 1 kg of potato =₹ 37
∴ Total cost of 2 kg of onion and 2 kg of
potato =₹ 32×2+₹ 37 × 2=₹ 64+₹ 74
=₹ 138
(ii) Mother could have bought a combination of 1 kg of custard apple, 1 kg of beans and 1 kg of radish i.e. ₹ 45+₹ 95+₹ 23=₹ 163 Yes, there are more than one possibility.
(iii)
(iv) Cost of 1 kg bananas =₹ 55
Cost of 3 kg bananas =₹ 55 × 3=₹ 165
In the options (a), (b) and (d), total money is greater than ₹ 165
∴ They can use options (a), (b) and (d) to buy the bananas.
A Strange Puzzle (NCERT Pg 99)
Question 2.
Four naughty kids on a walk come across a fresh orange crop. They ask the farmer the price of one. The farmer says, ‘Each costs ₹ 21’.
Two oranges each they buy. The farmer gives them with a sigh. They all reach into their jackets to take out notes from their pockets.
Each one pays a different note, Krishna a ₹ 50 and Sudama a ₹ 100, Mala a ₹ 200 and Neela a ₹ 500.
What is the balance that they each got?
Cost of one orange =₹ 21
Cost of two oranges =₹ 21 × 2
=₹ 42
Let Us Play (NCERT Pg 100)
Question 3.
(i) Place the numbers 1-6 in the blanks in such a way that the sum on each side of the triangle is 9. No numbers should be repeated.
(ii) Use the same numbers 1-6 and make the sum 10 on each side of the triangle.
(iii) What other sums can you make with these 6 numbers? Can you make 12 on each side? Can you make 13 ?
(iv) What strategy did you use to place the numbers?
Answer:
(iii) The minimum possible sum for each side is 9 when the corners are 1,2,3 and the sides are 4,5,6.
The maximum possible sum for each side is 12 when the corners are 4,5,6 and the sides are 1,2,3.
Therefore, sum of 12 on each side is possible and sum of 13 on each side is not possible.
(iv) Do yourself
(NCERT Pg 103)
Question 4.
(i) Daisy and Lou ate one large piece of pusaw for ₹ 38. They liked it a lot and bought another small piece for ₹ 16. How did they spend on pusaw? Estimate the money they spent.
Write the final answer after regrouping in the boxes above.
(ii) Daisy and Lou had collected ₹ 185 in their piggy bank. Their mother gave them ₹ 125 more for the trip. How much money did they take for the trip? Estimate the money they took for the trip.
Daisy and Lou took ₹ ……………… for the trip. Write the final answer after regrouping in the boxes above.
Answer:
Let Us Do (NCERT Pg 105)
Question 5.
In Kalakshitij, a school of performing arts, the following number of students are learning to sing and play the tabla. Estimate and then find the total number of students.
15 more girls join the music school and they want to learn to play the tabla. How many girls play the tabla now?
Answer:
Initially, girls playing tabla =95
New girls joining for tabla =15
Total girls =95+15=110 girls
Question 6.
Add by aligning the numbers in columns in your notebook.
(i) 32+47
(ii) 654+95
(iii) 286+123
(iv) 476+324
(v) 700+289
(vi) 534+483
Answer:
Question 7.
Preeti’s school has 423 children. Her school has 178 children less than her cousin’s school. How many children study in Preeti’s cousin’s school?
Answer:
Given, number of children in Preeti’s school =423
Preeti’s school has 178 children less than her cousin’s school.
So, number of children in cousin’s school
= Preeti’s school +178
= 423+178=601 children
Let Us Solve(NCERT Pg 108)
Question 8.
Ram Chacha got 264 mangoes from his mango tree last year. This year he got 527 mangoes. How many more mangoes did he get this year? Estimate the answer.
Given that mangoes got last year =264 and mangoes this year = 527
Number of mangoes which is more than this year =527-264=263
Question 9.
During the festival of dolls (Gombe Habba in Dussehra), Ranganna made 639 dolls. He was able to sell 531 dolls. How many dolls are left with him?
Estimate the answer.
Number of dolls left = ………….
Answer:
Given that total dolls made =639 and dolls sold = 531
Dolls left = Dolls made by Ranganna
Dolls sold by Ranganna
=639-531=108
Number of dolls left =108
Question 10.
Subtract by aligning the numbers in columns in your notebook.
(i) 83-29
(ii) 345-123
(iii) 763-437
(iv) 803-350
(v) 900-328
Answer:
Let Us Solve (NCERT Pg 109-111)
Question 11.
These books are in the community library of Wakanda village. Children borrow these books to read during their vacation.
(i) Rami read Panchatantra Tales during the summer vacation. Kesu read Akbar Birbal, Karadi Tales and Blue Umbrella. Who do you think read more? How many more pages?
(ii) Sumi has read 23 pages of Adventures of Feluda. How many more pages are left to complete the book?
(iii) Jaggu decides to read all the books listed here during his vacation. He has finished reading Swami and Friends, Akbar Birbal and 50 pages of Feluda in 4 weeks. How many more pages does he have to read to finish reading all the books?
Answer:
(i) Pages read by Rami of Panchatantra Tales
=236 pages
Pages read by Kesu of Akbar Birbal (96), Karadi (30) and Blue Umbrella (90)
=96+30+90
=216 pages
So, Rami reads more pages than Kesu.
Number of pages read by Rami more than
Kesu =236-216
=20pages
(ii) Total pages in Adventures of Feluda =128
Pages read by Sumi = 23
Pages left =128-23=105
105 pages are left for Sumi to finish the book.
(iii) Jaggu wants to read all books.
So, total number of pages
=179+236+30+96+90+128
=759 pages Number of pages Jaggu has already read is
Swami and Friends = 179,
Akbar Birbal =96
and Adventures of Feluda =50pages
Number of pages read by Jaggu
=179+96+50
=325 pages
Pages left to read for Jaggu
=759-325
=434 pages
Jaggu has 434 more pages to read.
Question 12.
A daily train between Delhi and Aligarh travels a distance of 131 km. Look at the picture below and answer the questions that follow.
(i) How many passengers are there on the train when it leaves Dadri?
(ii) Find the number of people who got off the train at Aligarh.
(iii) Were there more people on the train in New Delhi or in Aligarh? How much more/less?
(iv) How many people travelled altogether by the train?
Answer:
(i) Train starts from New Delhi.
Number of people boarded in train =894
At Ghaziabad, 158 people boarded in train and 23 people alighted from train.
So, number of people in train at Ghaziabad =894+158-23=1029
At Dadri, 67 people boarded in train and 75 people alighted from train.
So, number of people in train when it leaves Dadri =1029+67-75=1021 1021 passengers are on the train after leaving Dadri.
(ii) We are not told how many people boarded at Aligarh.
So, people remaining on the train after Aligarh is 0 because train ends here.
So, all 1021 passengers got off. 1021 people alighted at Aligarh.
(iii) People on train at New Delhi =894
People on train at Aligarh = 1021
So clearly, more people were on the train in Aligarh.
Difference =1021-894=127
Hence, 127 more people were on the train in Aligarh.
(iv) People who boarded the train are New Delhi =894, Ghaziabad = 158 and Dadri = 67
Number of people travelled altogether by the train =894+158+67=1119
Hence, 1119 people travelled on the train altogether.
Let Us Solve (NCERT Pg 111-112)
Question 13.
(iii) Find quick ways of solving. Think about some of the strategies you learnt in Grade 3.
(iv) Solve by aligning the numbers in columns in your notebook.
(a) 38+943
(b) 465+305
(c) 435+462
(d) 764-657
(e) 518-209
(f) 879-53
(v) Find two numbers such that their sum is 856 . Find another two numbers such that their difference is 563 . Make your own word problems with these numbers.
Question 16.
Add
(i) 23+489
(ii) 105+295
(iii) 630+56
(iv) 35+99
(v) 409+387
(vi) 67+76
(vii) 580+207
(viii) 333+666
(ix) 826+268
Answer:
Question 17.
Subtract
(i) 300-45
(ii) 962-268
(iii) 706-209
(iv) 842-387
(v) 674-76
(vi) 754-409
(vii) 403-245
(viii) 600-384
(ix) 546-538
Answer:
