Total number of students in school = 461 + 439 = 900
(a) In a bicycle, only 2 people can travel, so the number of bicycles needed for all of
them to go on a trip = \(\frac{1}{2}\) = 450.
(b) In an auto rickshaw, only 3 people can travel, so the number of auto rickshaws needed for all of them to go on a trip = \(\frac{900}{3}\) = 300.
(c) In a car, only 4 people can travel, so the number of cars needed for all of them to go on a trip = \(\frac{900}{4}\) = 225.
(d) In a big car, only 6 people can travel, so the number of big cars needed for all of them to go on a trip = \(\frac{900}{6}\) = 150.
(e) In a tempo traveller, only 10 people can travel, so the number of tempo travellers needed for all of them to go on a trip = \(\frac{900}{10}\) = 90
(f) In a boat, only 20 people can travel, so the number of boats needed for all of them to go on a trip = \(\frac{900}{20}\) = 45.
(g) In a minibus, only 25 people can travel, so the number of minibuses needed for all of them to go on a trip = \(\frac{900}{25}\) = 36
(h) In an aeroplane, 180 people can travel, so the number of aeroplanes needed for all of them to go on a trip = \(\frac{900}{180}\) = 5.
NCERT Textbook Pages 10-11
Finding Large Numbers Around Us
A book has around 200 pages, and each page has about 50 words. The book therefore has about 10,000 words in all.
Find something in the textbook whose count is a 4-digit
Solution:
A book has around 200 pages each page has about 50 words. We can assume that there are about 10 words in a sentence. There would be 50 ÷ 10 = 5 sentences on each page. So, the number of sentences in the book = 200 × 5 = 1,000 which is 4-digit number.
Now, let us try this with our school.
(a) Our school has ______ classrooms.
(b) There are ______ students in my class.
(c) Our classroom has ______ books in total.
Solution:
Do it yourself
Find something in the classroom whose count is a—
(i) 4-digit number
(ii) 5-digit number
Solution:
Do it yourself
List some quantities whose count is a 4-digit or a 5-digit number in the context of—
(i) A tree.
(ii) Your village/town/city, or any other place of your choice.
Solution:
Do it yourself
NCERT Textbook Pages 11-13
Pastime Mathematics