PART - 1 CH : 1 Large Numbers Around Us MATHS - PART - 1 CH : 1 Large Numbers Around Us

The number for the number name ‘Five crore five lakh six thousand seventy’ is-

The short name for number ‘13,78,426’ is-

(5672 – 2345) estimated to the nearest hundreds is-

How many thousands make a million?

3 crore ___ 30 million

150 lakh ___ 15 million

7 thousand ___ 70 thousand

1 crore ___ 10 million

200 lakh ___ 20 million

How many thousands make a crore?

Obtain the closest of the following numbers by using any operation on the values given in the boxes.

(a) 12020,
(b) 68650,
(c) 92480.

Make necessary reasonable assumptions and answer the questions:
If a book weighs 200 g, could a person carry 500 books at once?

Make necessary reasonable assumptions and answer the questions:
If a bus covers 500 kilometres every day, can it travel 1 lakh kilometres in 6 months?

Complete the following number pattern:
6 × 7 = …
66 × 67 = …
666 × 667 = …
6666 × 6667 = …
66666 × 66667 = …

Obtain the closest of the following numbers by using any operation on the values given in the boxes.

300	7000	12000
800	1500	50000

(a) 21,500
(b) 43,950

Complete the following number pattern :
33 × 31 = ________
333 × 331 = ________
3333 × 3331 = ________
33333 × 33331 = ________

Complete the following number pattern :
7 × 2 = ________
77 × 2 = ________
777 × 2 = ________
7777 × 2 = ________
77777 × 2 = ________
777777 × 2 = ________

Write the numbers given below in both the Indian as well as the International systems :
(a) 4735108
(b) 924860

The number 1,30,285, when written fully in words, one lakh thirty thousand two hundred eighty-five, has 41 letters. Give a 6-digit number name that has the most letters.

A calculator has only ‘+1,000’, ‘+100’, and ‘+10’buttons. Write an expression describing the number of button clicks to be made for the following numbers :
(a) 850
(b) 2,140
(c) 10,500
(d) 7,53,020

The population of India in the beginning of .2025 was around 1461163352. Year by year, there has be.en an explosion of population, which is making it difficult to provide resources to every person living in the country. Taking the right measures and keeping the resources in mind will help to control the population. The population of four cities A, B, C, and D are 79836275, 67364212, 48936778, and 98796040, respectively.
Based on the above discussion, answer the following questions:
Q.1. Write the population of India in Indian system of numeration.
Q.2. Write the population of city D in the International system.
Q.3. What is the total population of city A and city B?
Q.4. What is the difference in the population of city C and city D?

Make necessary reasonable assumptions and answer the following questions :
(a) If a computer processes 1,000 files per minute, can it process 1 crore files in a day?
(b) If a person drinks 3 litres of water daily, can they drink 1000 litres in a year?
(c) If a tap fills 600 litres of water every hour, can it fill a 100,000-litre tank in a day?