Math Ch1- Large Numbers( Notebook work)


Chapter 1- Large Numbers

Exercise 1.1

1. Write the number names for the following.

a. 23,618
Twenty- three thousand six hundred eighteen.

b. 50,114
Fifty thousand one hundred fourteen.

c. 1,37,419
One lakh thirty-seven thousand four hundred and nineteen.

d. 8,05,362
Eight lakh five thousand three hundred and sixty two.

2. Write the following numbers in figures.

a. Thirty five thousand four hundred twenty-one
35,421

b. Ninety thousand six hundred nine
90,609

c. Five lakh seventy thousand nine hundred eleven
5,70,911

d. Two lakh twenty-one thousand four hundred
2,21,400

3. Write the place value of the underlined digit in the given numbers.

a. 49,652
The place value of digit 5 is 50.

b. 61,058
The place value of digit 6 is 60,000.

c. 9, 71,813
The place value of digit 9 is 9, 00,000.

d. 3, 06,591
The place value of digit 0 is 0.

4. Write the expanded form of the given numbers.

a. 99,342
90,000+9,000+300+40+2

b.50, 234
50,000+200+30+4 

c. 7, 61, 630
7, 00,000+60,000+1,000+600+30

d. 2, 10,712
2, 00,000+10,000+700+10+2






Exercise 1.2

1. Write the smallest and the greatest 7- digit number using Indian system of  Numeration.

            Smallest 7-digit number is 10,00,000
            Greatest 7-digit number is 99,99,999

2. Put the commas in the following numbers using the Indian System of Numeration and write them in words.

a. 2642523

26,42,523 – Twenty-six lakh forty-two thousand five hundred twenty three.

b.7634501

76,34,501- Seventy-six lakh thirty-four thousand five hundred one.

c. 42912069

4,29,12,069 - Four crore twenty-nine lakh twelve thousand sixty-nine.

d. 90247169

9,02,47,169 – Nine crore two lakh forty-seven thousand one hundred sixty-nine.

3. Put the commas in the following numbers using the International System of Numeration and write them in words.

a. 2531785

2,531,785 - Two million five hundred thirty-one thousand seven hundred eighty five.

b. 8203008

8,203,008 - Eight million two hundred three thousand eight.

c. 13275196

13,275,196 - Thirteen million two hundred seventy five thousand one hundred ninety six.

d. 10532750

10,532,750 - Ten million five hundred thirty two thousand seven hundred fifty.

4. Write the numeral for each of the following.

            a. Eighteen lakh seventy-four thousand four hundred nine
            18,74,409

            b. Nine crore
    9,00,00,000

c. Four million two hundred sixteen thousand two hundred sixty-eight
4,216,268

d. Fifty-two million
52,000,000

e. Twelve million four hundred twenty five thousand one hundred eighty-three
12,425,183

f. One crore forty-five lakh
1,45,00,000

5. Fill in the blanks

            a. One million =  Ten lakh
            b. One crore = Ten million
            c. Twenty lakh = Two millions
            d. Four thousand hundreds =  Four lakhs






Exercise 1.3

1. Write the place value of the underlined digit in the following numbers.

Number
Place Value
a. 35,15,361
5,000
b. 21,67,960
900
c. 1,46,15,042
40,00,000
d. 1,67,41,884
1,000

2. Write the expanded form of the following numbers.

a. 34,49,878

30,00,000+4,00,000+40,000+9000+800+70+8

b. 28,76,710

20,00,000+8,00,000+70,000+6,000+700+10

c. 6,75,48,765

6,00,00,000+70,00,000+5,00,000+40,000+8,000+700+60+5

d. 1,29,42,108

1,00,00,000+20,00,000+9,00,000+40,000+2,000+100+8

3. Write the standard form of the following numbers.

a. 30,00,000+2,00,000+80,000+3000+500+80+3

32,83,583

b. 90,00,000+70,000+1000+200+40+9

90,71,249

c. 2,00,00,000+40,00,000+3,00,000+60,000+7000+100+20+1

2,43,67,121

d. 1,00,00,000+10,00,000+40,000+5000+90+8

1,10,45,098


4. Write the predecessor and successor of the following numbers.

Predecessor
Number
Successor
74,06,411
74,06,412
74,06,413
51,90,668
51,90,669
51,90,670
3,19,61,231
3,19,61,232
3,19,61,233
1,34,00,819
1,34,00,820
1,34,00,821

 



  



Exercise 1.4

1. Compare the numbers and fill in the boxes with ’<’, ’>’, ’=’ sign

a. 6,50,92,176  <  6,50,97,126

b. 8,11,44,309  <  8,41,41,309

c. 2,27,60,317  >  1,27,60,317

d. 2,18,74,321  <  2,81,74,321

2. Arrange the following numbers in ascending order.

 a. 1,67,56,298 ; 24,91,879 ; 2,43,26,974 ; 90,25,476 ; 10,78,879
        
 10,78,879 ; 24,91,879 ; 90,25,476 ; 1,67,56,298 ; 2,43,26,974
           
b. 32,07,871 ; 30,18,970 ; 34,30,796 ; 32,53,116 ; 3,21,34,116

30,18,970 ; 32,07,871 ; 32,53,116 ; 34,30,796 ; 3,21,34,116
            
c. 4,00,91,885 ; 40,99,628; 1,40,21,300 ; 44,25,965 ; 5,92,67,231

40,99,628 ; 44,25,965 ; 1,40,21,300 ; 4,00,91,885 ; 5,92,67,231

3. Arrange the following numbers in descending order.

a. 50,87,113 ; 55,00,873 ; 51,03,672 ; 5,00,42,825 ; 5,98,11,200

5,98,11,200 ; 5,00,42,825; 55,00,873 ; 51,03,672 ; 50,87,113
            
b. 3,21,75,378 ; 6,00,92,126 ; 37,99,472 ; 6,12,54,141 ; 67,98,339
                   
6,12,54,141 ; 6,00,92,126 ; 3,21,75,378 ; 67,98,339 ; 37,99,472
           
c. 83,45,567 ; 1,84,69,227 ; 18,95,768 ; 8,11,04,572 ; 11,89,548     
                     
 8,11,04,572 ; 1,84,69,227 ; 83,45,567 ; 18,95,768 ; 11,89,548

4. Form the smallest and the greatest number using given digits and complete the following table. Each digit must be used only once

Digits
Smallest number
Greatest number
a. 5,6,2,3,9,8,1
12,35,689
98,65,321
b. 7,2,9,3,0,1,6
10,23,679
97,63,210
c. 8,1,2,9,5,7,3,4
1,23,45,789
9,87,54,321
d. 3,6,1,0,2,5,4,7
1,02,34,567
7,65,43,210




Exercise 1.5

1. Round off the following numbers to the nearest 10.

a. 17,504 – 17,500

b. 19,55,724 – 19,55,720

c. 8,23,78,209 – 8,23,78,210

2. Round off the following numbers to the nearest 100.

            a. 9,10,417 – 9,10,400

            b. 76,42,555 – 76,42,600

            c. 5,26,35,431 - 5,26,35,430

3. Round off the following numbers to the nearest 1000.

            a. 26,038 – 26,000

            b. 5,92,119 – 5,92,000

            c. 1,61,36,574 – 1,61,37,000

4. The following table shows the number of people in different age groups. Complete the following table by rounding off these numbers.


Age Groups
Number of people
Round off to nearest 10
Round off to nearest 100
Round off to nearest 1000
a. 25 to 35
9,85,678
9,85,680
9,85,700
9,86,000
b. 40 to 50
1,38,60,961
1,38,60,960
1,38,61,000
1,38,61,000
c. 55 to 65
65,80,713
65,80,710
65,80,700
65,81,000









Exercise 1.6

1. Write Hindu- Arabic numerals for the following.

a. XCI - 91

b. XLIV- 44

c. LVII - 57

d. LXXI - 71

e. XCII - 92

f. XXXVI- 36

g. XCIX- 99

h. LXVIII - 68

2. Write Roman numerals for the following.

a. 21 – XXI

b. 54 – LIV

c. 65 – LXV

d. 76 – LXXVI

e. 89- LXXXIX

f. 138 – CXXXVIII

g.169 – CLXIX

h.195 - CXCV

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