Chapter 1 : Formation of Large Numbers
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Do These
1. Identify and write the numbers for each of the following in your notebook. Draw the pictures like these if needed.
(a) 12 Ones
12
(b) 17 Ones
17
(c) 39 Ones
39
(d) 35 Tens
350
(e) 86 Tens
860
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Do These
1. Identify and write the numbers for each of the following.
(a) 11 Tens and 14 Ones
11 Tens + 14 Ones = 11 Tens + 10 Ones + 4 Ones
= 12 Tens + 4 Ones
= 124
= 12 Tens + 4 Ones
= 124
(b) 34 Tens and 12 Ones
34 Tens + 12 Ones = 34 Tens + 10 Ones + 2 Ones
= 35 Tens + 2 Ones
= 352
= 35 Tens + 2 Ones
= 352
(c) 5 Hundreds, 24 Tens and 6 Ones
5 Hundreds + 24 Tens + 6 Ones
= 5 Hundreds + 20 Tens + 4 Tens + 6 Ones
= 5 Hundreds + 2 Hundreds + 4 Tens + 6 Ones
= 7 Hundreds + 4 Tens + 6 Ones
= 746
= 5 Hundreds + 20 Tens + 4 Tens + 6 Ones
= 5 Hundreds + 2 Hundreds + 4 Tens + 6 Ones
= 7 Hundreds + 4 Tens + 6 Ones
= 746
Write in Words
2. If one block represents one thousand (1000), then write the following numbers in words.
| Number | Answer |
|---|---|
| 2,000 | Two thousand |
| 3,000 | Three thousand |
| 4,000 | Four thousand |
| 5,000 | Five thousand |
| 6,000 | Six thousand |
| 7,000 | Seven thousand |
| 8,000 | Eight thousand |
| 9,000 | Nine thousand |
| 10,000 | Ten thousand |
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Do These
1. Represent the given numbers with beads on the Spike Abacus.
(a) 55,555
| Ten Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|
| 5 | 5 | 5 | 5 | 5 |
(b) 60,008
| Ten Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|
| 6 | 0 | 0 | 0 | 8 |
(c) 70,304
| Ten Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|
| 7 | 0 | 3 | 0 | 4 |
(d) 87,342
| Ten Thousands | Thousands | Hundreds | Tens | Ones |
|---|---|---|---|---|
| 8 | 7 | 3 | 4 | 2 |
2. Write numbers by reading the beads on the Spike Abacus.
(a)
24,532
(b)
31,645
(c)
10,203
(d)
52,041
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Do These
1. Place commas to the given numbers and then write them in words.
| Question | Answer |
|---|---|
| (a) 16372 | 16,372 — Sixteen thousand three hundred and seventy two. |
| (b) 29450 | 29,450 — Twenty nine thousand four hundred and fifty. |
| (c) 86004 | 86,004 — Eighty six thousand and four. |
2. Write the following numbers in words.
| Question | Answer |
|---|---|
| (a) 32,896 | Thirty two thousand eight hundred and ninety six. |
| (b) 46,900 | Forty six thousand nine hundred. |
| (c) 92,006 | Ninety two thousand and six. |
Chapter 1 : Large Numbers
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Do These
1. Write the expanded form of the following numbers.
(a) 15,387
15,387 = 10,000 + 5,000 + 300 + 80 + 7
(b) 42,609
42,609 = 40,000 + 2,000 + 600 + 0 + 9
(c) 67,892
67,892 = 60,000 + 7,000 + 800 + 90 + 2
(d) 98,205
98,205 = 90,000 + 8,000 + 200 + 0 + 5
2. Write the short form of the following.
(a) 80,000 + 6,000 + 900 + 20 + 8
86,928
(b) 90,000 + 20 + 4
90,024
3. Write the place values of the given digits and digits for the given place values.
| Place Value | Answer |
|---|---|
| 9,000 | 9 |
| 800 | 8 |
| 20 | 2 |
| 4 | 4 |
Chapter 1 : Large Numbers
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4. Sri uses each of the number cards below exactly once to make the greatest possible four-digit number.
Digits: 7, 5, 4, 9
Digits: 7, 5, 4, 9
Greatest four-digit number = 9754
What is the place value of the digit 5 in that number?
A) 5
B) 50
C) 500
D) 5000
B) 50
C) 500
D) 5000
✔ Correct Answer: C) 500
Math Lab Activity
Make the place value slider. Children can take turns to increase or decrease the number as told.
(a) 67,345 – Increase the number by 3.
67,345 + 3 = 67,348
(b) 67,345 – Increase the number by 50.
67,345 + 50 = 67,395
(c) 67,345 – Decrease the number by 200.
67,345 − 200 = 67,145
(d) 67,345 – Increase the number by 2,000.
67,345 + 2,000 = 69,345
(e) 67,345 – Decrease the number by 30,000.
67,345 − 30,000 = 37,345
Chapter 1 : Formation of Large Numbers
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EXERCISE - 1
1. Write the following numbers in words.
(a) 25,250
Twenty five thousand two hundred and fifty.
(b) 41,415
Forty one thousand four hundred and fifteen.
(c) 72,300
Seventy two thousand three hundred.
2. Write the numeral for the following number names.
(a) Thirty three thousand eight hundred and fifteen.
33,815
(b) Ninety two thousand and eighty five.
92,085
3. Write the numbers as per the instructions.
(a) 1 ten thousand + 9 thousands + 4 hundreds + 5 tens + 8 ones
10,000 + 9,000 + 400 + 50 + 8 = 19,458
(b) 3 ones + 2 tens + 6 hundreds + 7 thousand + 4 ten thousands
40,000 + 7,000 + 600 + 20 + 3 = 47,623
4. What is the place value of 4 in each of the following numbers? One is done for you.
| Number | Answer |
|---|---|
| (a) 95,403 | 4 Hundreds = 400 (Given) |
| (b) 4,327 | 4 Thousands = 4,000 |
| (c) 48,932 | 4 Ten Thousands = 40,000 |
5. Write the expanded form of the following.
(a) 5,642
5,000 + 600 + 40 + 2
(b) 24,926
20,000 + 4,000 + 900 + 20 + 6
6. Write the short form of the following.
(a) 90,000 + 3,000 + 400 + 70 + 6
93,476
(b) 40,000 + 6
40,006
7. Which of the following numbers does the digit 5 have a place value of five thousand?
A) 7,500
B) 15,000
C) 26,500
D) 50,010
B) 15,000
C) 26,500
D) 50,010
✔ Correct Answer: B) 15,000
Chapter 1 : Large Numbers
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Think and Discuss
Hence 35,724 < 35,728. Is it true?
Yes. Since 724 is less than 728, therefore 35,724 < 35,728.
Do These
1. Put the correct symbol <, > or = in the boxes given below.
| Question | Answer |
|---|---|
| (a) 43,004 ☐ 42,004 | 43,004 > 42,004 |
| (b) 72,549 ☐ 72,549 | 72,549 = 72,549 |
| (c) 52,927 ☐ 64,327 | 52,927 < 64,327 |
Chapter 1 : Formation of Large Numbers
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Example-3
1. Here are some Helpline numbers in the table below. Write the numbers in Ascending and Descending order.
| S. No. | Purpose | Helpline Number |
|---|---|---|
| 1 | Public Grievance Cell Telecom Circle HQs | 12,727 |
| 2 | Corruption Grievances | 14,400 |
| 3 | Grievances of School Education | 14,417 |
| 4 | Grievances of Legal Service Organisation | 15,100 |
| 5 | Grievances of Sand, Alcohol | 14,500 |
(a) Ascending Order
12,727, 14,400, 14,417, 14,500, 15,100
(b) Descending Order
15,100, 14,500, 14,417, 14,400, 12,727
Do These
2. Arrange the following numbers in Ascending and Descending order.
(a) 16,256, 20,380, 96,465, 30,856, 56,492
Ascending Order:
16,256, 20,380, 30,856, 56,492, 96,465
Descending Order:
96,465, 56,492, 30,856, 20,380, 16,256
16,256, 20,380, 30,856, 56,492, 96,465
Descending Order:
96,465, 56,492, 30,856, 20,380, 16,256
(b) 27,438, 5,682, 38,648, 97,294, 56,642
Ascending Order:
5,682, 27,438, 38,648, 56,642, 97,294
Descending Order:
97,294, 56,642, 38,648, 27,438, 5,682
5,682, 27,438, 38,648, 56,642, 97,294
Descending Order:
97,294, 56,642, 38,648, 27,438, 5,682
Chapter 1 : Formation of Large Numbers
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Do These
(a) Write all the possible 2-digit numbers formed by the digits 5 and 4.
54, 45
(b) Write all the possible 3-digit numbers formed by the digits 4, 7 and 2.
247, 274, 427, 472, 724, 742
(c) Write all the possible 4-digit numbers formed by the digits 2, 4, 8 and 1 without repeating. How many are there?
1248, 1284, 1428, 1482, 1824, 1842,
2148, 2184, 2418, 2481, 2814, 2841,
4128, 4182, 4218, 4281, 4812, 4821,
8124, 8142, 8214, 8241, 8412, 8421
Total numbers = 24
2148, 2184, 2418, 2481, 2814, 2841,
4128, 4182, 4218, 4281, 4812, 4821,
8124, 8142, 8214, 8241, 8412, 8421
Total numbers = 24
(d) Guru wrote 0189 is the smallest number formed by using the digits 9, 0, 8 and 1. Is it correct? Justify your answer.
No. A 4-digit number cannot begin with 0.
The smallest 4-digit number formed using the digits 9, 0, 8 and 1 is 1089.
The smallest 4-digit number formed using the digits 9, 0, 8 and 1 is 1089.
Chapter 1 : Formation of Large Numbers
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Do These
Using the given digits, write the largest and the smallest numbers without repeating any digit.
| Digits | Largest Number | Smallest Number |
|---|---|---|
| 1. 7, 2, 8, 3, 9 | 98,732 | 23,789 |
| 2. 3, 7, 0, 4, 6 | 76,430 | 30,467 |
| 3. 2, 9, 5, 3, 4 | 95,432 | 23,459 |
Chapter 1 : Formation of Large Numbers
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Do These
(a) Write the successor of 24,564.
24,564 + 1 = 24,565
(b) Write the predecessor of 34,323.
34,323 − 1 = 34,322
(c) Complete the following table.
| Number | Predecessor | Successor |
|---|---|---|
| 42,356 | 42,355 | 42,357 |
| 38,600 | 38,599 | 38,601 |
| 25,999 | 25,998 | 26,000 |
(d) What is the predecessor of 1206 + 160?
A) 1370
B) 1367
C) 1366
D) 1365
B) 1367
C) 1366
D) 1365
1206 + 160 = 1366
Predecessor = 1365
✔ Correct Answer: D) 1365
Predecessor = 1365
✔ Correct Answer: D) 1365
1.Large Numbers
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Do These
1. Write the Hindu-Arabic numbers for the following Roman numerals.
(a) VI ________
6
(b) XVI ________
16
(c) X ________
10
2. Write the Roman numerals for the following Hindu-Arabic numbers.
(a) 25 ________
XXV
(b) 14 ________
XIV
(c) 17 ________
XVII
3. Write the Roman numbers to the Hindu-Arabic numbers and Hindu-Arabic numbers to Roman numbers in the blanks given below.
| S.No. | Name of the Game | Number of Players (Hindu-Arabic) | Number of Players (Roman) |
|---|---|---|---|
| 1 | Kabaddi | 7 | VII |
| 2 | Cricket | 11 | XI |
| 3 | Kho-Kho | 9 | IX |
| 4 | Volley Ball | 6 | VI |
| 5 | Football | 11 | XI |
4. Write the numbers in order on the snake.
Complete the snake by writing the numbers in sequence exactly as shown in the textbook.
Chapter 1 : Large Numbers
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EXERCISE - 2
1. Circle the smallest number given below.
a) 28,828
b) 82,988
c) 63,215
d) 24,321
Answer: d) 24,321
2. Circle the greatest number given below.
a) 80,081
b) 80,801
c) 80,180
d) 80,108
Answer: b) 80,801
3. Write the predecessor of the given number.
a) ............ 46,250
46,249
b) ............ 72,579
72,578
c) ............ 38,205
38,204
4. Write the predecessor and successor of the following numbers.
| Number | Predecessor | Successor |
|---|---|---|
| 43,565 | 43,564 | 43,566 |
| 40,000 | 39,999 | 40,001 |
5. Fill in the blanks with ">", "<" or "=".
a) 8,154 ____ 8,514
<
b) 59,260 ____ 59,260
=
6. The number of people who visited an exhibition in four days are 1826, 1493, 1630 and 1863 respectively. Arrange these numbers in the ascending order.
1493, 1630, 1826, 1863
7. The hall ticket number of Lasya, who is appearing for Jawahar Navodaya Vidyalaya Entrance Exam is 42384. Write the hall ticket numbers of students sitting behind and in front of her.
Behind : 42,385
In front : 42,383
In front : 42,383
8. Devika has 13 hundred rupee notes, 24 ten rupee notes and 19 one rupee coins. How much total amount she has? ( )
a) 1343
b) 1359
c) 1559
d) 1543
Answer: c) 1559
Chapter 1 : Formation of Large Numbers
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Improve your Learning
1. Narendra had 23 hundred, 12 ten rupee notes, 18 one rupee coins. Tarun had 22 hundred, 32 ten rupee notes, 16 one rupee coins.
(a) How much amount did Narendra and Tarun have?
Narendra = 23 × 100 + 12 × 10 + 18 = 2300 + 120 + 18 = ₹2,438
Tarun = 22 × 100 + 32 × 10 + 16 = 2200 + 320 + 16 = ₹2,536
Tarun = 22 × 100 + 32 × 10 + 16 = 2200 + 320 + 16 = ₹2,536
(b) Who had the more money?
Tarun had more money.
2. How many beads should be removed from the thousands place of the abacus, if it has to represent the number between 5000 and 6000? ( )
a) 1
b) 2
c) 3
d) 4
Correct Answer: b) 2
3. Some number cards are given below.
35678 35761 35562 35697 35964
If these cards are arranged from small to big, which of the following numbers comes just before 35697?
35678 35761 35562 35697 35964
If these cards are arranged from small to big, which of the following numbers comes just before 35697?
a) 35964
b) 35562
c) 35761
d) 35678
Ascending order:
35562, 35678, 35697, 35761, 35964
Correct Answer: d) 35678
Correct Answer: d) 35678
4. Two students wrote the expanded form of 5037.
Student - 1 : 5000 + 300 + 7
Student - 2 : 5000 + 30 + 7
Who is correct?
Student - 1 : 5000 + 300 + 7
Student - 2 : 5000 + 30 + 7
Who is correct?
a) Only student 1 is correct.
b) Only student 2 is correct.
c) Both are correct.
d) Neither is correct.
b) Only student 2 is correct.
c) Both are correct.
d) Neither is correct.
5037 = 5000 + 30 + 7
Correct Answer: b) Only student 2 is correct.
Correct Answer: b) Only student 2 is correct.
5. If X is the successor of 9,999 and the predecessor of 10,001, what is the value of X?
Successor of 9,999 = 10,000
Predecessor of 10,001 = 10,000
X = 10,000
Predecessor of 10,001 = 10,000
X = 10,000
6. I am a 5-digit number.
- The digit in my ten-thousands place is 7.
- The digit in my hundreds place is half of 8.
- The digit in my ones place is the smallest odd number.
- The other two places are filled with 0.
Ten-thousands digit = 7
Thousands digit = 0
Hundreds digit = 4
Tens digit = 0
Ones digit = 1
The number is 70,401.
Thousands digit = 0
Hundreds digit = 4
Tens digit = 0
Ones digit = 1
The number is 70,401.