Try these : (Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 2
Q. Can you instantly find the greatest and the smallest numbers in each row?
| 1. | 382, 4972, 18, 59785, 750 | Ans. 59785 is the greatest and 18 is the smallest. |
| 2. | 1473, 89423, 100, 5000, 310. | Ans. 89423 is the greatest and 100 is the smallest. |
| 3. | 1834, 75284, 111, 2333, 450 | Ans.75284 is the greatest and 111 is the smallest. |
| 4. | 2853, 7691, 9999, 12002, 124 | Ans. 12002 is the greatest and 124 is the smallest. |
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 2
Find the greatest and the smallest numbers.
| a | 4536, 4892, 4370, 4452. | Ans. 4892 is the greatest and 4370 is the smallest. |
| b | 15623, 15073, 15189, 15800 | Ans. 15800 is the greatest and 15073 is the smallest. |
| c | 25286, 25245, 25270, 25210. | Ans. 25286 is the greatest and 25210 is the smallest. |
| d | 6895, 23787, 24569, 24659. | Ans. 24569, 24659 is the greatest and 6895is the smallest. |
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 3
1. Use the given digits without repetition and make the greatest and smallest 4-digit numbers.
(a) 2, 8, 7, 4
(b) 9, 7, 4, 1
(c) 4, 7, 5, 0
(d) 1, 7, 6, 2
(e) 5, 4, 0, 3
(Hint : 0754 is a 3-digit number.)
Answer:
| Q. No. | Given Digits | Greatest 4-digit numbers | Smallest 4-digit numbers |
| (a) | 2, 8, 7, 4 | 8742 | 2478 |
| (b) | 9,7, 4,1 | 9741 | 1479 |
| (c) | 4,7,5,0 | 7540 | 0457 |
| (d) | 1, 7, 6, 2 | 7621 | 1267 |
| (e) | 5, 4, 0, 3 | 5430 | 0345 |
Q.2 Now make the greatest and the smallest 4-digit numbers by using any one digit twice.
(a) 3, 8, 7
(b) 9, 0, 5
(c) 0, 4, 9
(d) 8, 5, 1
(Hint : Think in each case which digit will you use twice.)
Answer:
| Q. No. | Given Digits | Greatest 4-digit numbers | Smallest 4-digit numbers |
| (a) | 3, 8, 7 | 8873 | 3378 |
| (a) | 9, 0, 5 | 9905 | 5009 |
| (a) | 0, 4, 9 | 9940 | 4009 |
| (a) | 8, 5, 1 | 8851 | 1158 |
Q.3. Make the greatest and the smallest 4-digit numbers using any four different digits with conditions as given.
| (a) | Digit 7 is always at ones place |
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| (b) | Digit 4 is always at tens place |
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| (c) | Digit 9 is always at hundred place |
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| (d) | Digit1 is always at thousand place |
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Q4. Take two digits, say 2 and 3. Make 4-digit numbers using both the digits equal number of times.
Which is the greatest number?
Answer: 3322
Q5.Which is the smallest number?
Answer:2233
Q6. How many different numbers can you make in all?
Answer:3322, 2233, 3232, 2323
Stand in proper order
Q1. Who is the tallest?
Q2. Who is the shortest?
(a) Can you arrange them in the increasing order of their heights?
(b) Can you arrange them in the decreasing order of their heights?
Q1. Who is the tallest?
Answer: Ramhari is the tallest.
Q2. Who is the shortest?
Answer: Dolly is the Shortest.
Q.(a) Can you arrange them in the increasing order of their heights?
Answer (a):Increasing order of heights - Dolly (154 cm), Mohan (158 cm), Shashi (159 cm), Ramhari (160 cm)
 |
| Standing in Increasing Order |
(b) Can you arrange them in the decreasing order of their heights?
Answer :Decreasing order of heights - Ramhari (160 cm), Shashi (159 cm), Mohan (158 cm), Dolly (154 cm)
 |
| Standing in Decreasing Order |
Which to buy?
Sohan and Rita went to buy an almirah.There were many almirahs availablewith their price tags
(a) Can you arrange their prices in increasing order?
(b) Can you arrange their prices in decreasing order?
Answer(a): Increasing order of price-Rs 1788,Rs 1897,Rs 2635,Rs 2854,Rs 3975
 |
| Almirahs in Increasing Order of Price |
Answer(b): Decreasing order of price-Rs 3975,Rs 2854,Rs 2635,Rs 1897,Rs 1788
 |
| Almirahs in Decreasing Order of Price |
Q1. Arrange the following numbers in ascending order :
(a) 847, 9754, 8320, 571
(b) 9801, 25751, 36501, 38802
Answer(a) : 847, 571,8320,9754
Answer(b) : 9801, 25751,36501
Q2. Arrange the following numbers in descending order :
(a) 5000, 7500, 85400, 7861
(b) 1971, 45321, 88715, 92547
Answer(a): 85400, 7500, 5000,7861
Answer(b): 92547, 88715, 45321,1971
Q3. Make ten such examples of ascending/descending order and solve them.
Answer:
Ascending Order
Example1. 847, 9754, 8320, 571
Answer: 571,847,8320,9754
Example2. 9801, 45751, 25751, 2751,
Answer: 2751, 9801,25751, 45751
Example3. 25751, 36501, 38802
Answer: 25751,36501, 38802
Example4. 847, 571,8320,9754
Answer: 571, 847, 8320, 9754
Example5. 5000, 7500, 8540, 7861
Answer: 5000,7500, 7861, 8540
Example6. 85400, 7500, 5000,7861
Answer: 5000,7500, 7861,85400
Example7. 1971, 88715, 92547, 45321
Answer: 1971,45321,88715, 92547
Example8. 92547, 88715, 45321,1971
Answer: 1971,45321,92547, 88715
Example9. 2922, 2145, 2343, 1232
Answer: 1232, 2145,2343, 2922
Example10. 2343,2145,1253,1232
Answer: 1232, 1253, 2145, 2343
Descending Order
Example1. 847, 9754, 8320, 571
Answer: 9754, 8320, 847,571
Example2. 9801, 25751, 20751, 456
Answer: 25751,20751, 847, 571
Example3. 25751, 36501, 38802, 1203
Answer: 38802, 36501, 25751, 1203
Example4. 847, 371, 8320,9754
Answer: 9754, 8320,,847, 371
Example5. 5000, 7500, 85400, 7861
Answer: 85400, 7861,7500,5000
Example6. 85601, 4500, 1000,7861
Answer: 85601, 7861, 4500, 1000
Example7. 1971, 45321, 88715, 92547
Answer: 92547, 88715, 45321,1971
Example8. 12547, 80715, 45321,1501
Answer: 80715,45321,12547,1501
Example9. 90505, 89715, 45321,2022
Answer: 90507,89715,45321,2022
Example10. 1232, 2343, 2145,1253,
Answer: 2343, 2145,1253,1232
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 6
Read and expand the numbers wherever there are blanks.
| Number. | Number Name | Expansion |
| 20000 | twenty thousand | 2 × 10000 |
| 26000 | twenty six thousand | 2 × 10000 + 6 × 1000 |
| 38400 | thirty eight thousand four hundred | 3 × 10000 + 8 × 1000 + 4 × 100 |
| 65740 | sixty five thousand seven hundred forty | 6 × 10000 + 5 × 1000 + 7 × 100 + 4 × 10 |
| 89324 | eighty nine thousand three hundred twenty four | 8 × 10000 + 9 × 1000 + 3 × 100 + 2 × 10 + 4 × 1 |
| 50000 | fifty thousand | 5×10000 |
| 41000 | forty one thousand | 4×10000+1×1000 |
| 47300 | forty seven thousand three hundred | 4 ×10000+ 7×1000 + 3×100 |
| 57630 | fifty seven thousand six hundred thirty | 5 × 10000+7×1000 + 6×100 + 3 ×10 |
| 29485 | twenty nine thousand four hundred eighty five | 2×10000+9×1000+4×100 + 8 ×10+ 5×1 |
| 29085 | twenty nine thousand eighty five | 2×10000+9×1000+ 8 ×10+ 5×1 |
| 20085 | twenty thousand eighty five | 2×10000 + 8 ×10+ 5×1 |
| 20005 | twenty thousand five | 2×10000+ 5×1 |
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 6
Read and expand the numbers wherever there are blanks.
| Number. | Number Name | Expansion |
| 3,00,000 | Three lakh | 3 × 1,00,000 |
| 3,50,000 | Three lakh fifty thousand | 3 × 1,00,000 + 5 × 10,000 |
| 3,53,500 | Three lakh fifty three thousand five hundred | 3 × 1,00,000 + 5 × 10,000 + 5×100 |
| 4,57,928 | Four lakh fifty seven thousand nine hundred twenty eight | 4 × 1,00,000 + 5 × 10,000+7× 1 + 9×100+2 ×10+8×1 |
| 4,07,928 | Four lakh seven thousand nine hundred twenty eight | 4 × 1,00,000 +7× 1,000+ 9×100+2 ×10+8×1 |
| 4,00,829 | Four lakh eight hundred twenty nine | 4 × 1,00,000 + 8× 100+2×10+9×1 |
| 4,00,029 | Four lakh twenty nine | 4× 1,00,000 +2×10+9×1 |
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 8
1. What is 10 – 1 =9
2. What is 100 – 1 =99
3. What is 10,000 – 1 =9,999
4. What is 1,00,000 – 1 =99,999
5. What is 1,00,00,000 – 1 =99,99,999
(Hint : Use the said pattern.)
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 8
Q1. Give five examples where the number of things counted would be more than
6-digit number.
Answer:
1.The population of chandigarh
2.Numbers of stars in the sky
3.Numbers of cars in IndIa
4.Numbers of trees in IndIa
5.Numbers of mobils in IndIa
Q2. Starting from the greatest 6-digit number, write the previous five numbers in
descending order.
Answer: The greatest 6-digit number : 999999
The previous five numbers in descending order: 999998, 999997, 999996, 999995, 999994,
Q3. Starting from the smallest 8-digit number, write the next five numbers in ascending order and read them.
Answer: the smallest 8-digit number : 10000000
The next five numbers in ascending order: 10000001,10000002,10000003,10000004,10000005
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 11
Q1. Read these numbers. Write them using placement boxes and then write
their expanded forms.
(i) 475320 (ii) 9847215 (iii) 97645310 (iv) 30458094
(a) Which is the smallest number?
(b) Which is the greatest number?
(c) Arrange these numbers in ascending and descending orders.
Answer(a). 475320 (Four Lakh seventy five Thousand three Hundred twenty ) is the smallest number.
Answer(b). 97645310 (Nine crore seventy six Lakh forty five thousand three hundred ten) is the greatest number.
Answer(c).
1. Ascending orders : (i) 475320 (ii) 9847215 (iv) 30458094 (iii) 97645310
2. Descending orders : (iii) 97645310 (iv) 30458094 (ii) 9847215 (i) 475320
| Number | Cr | T.Lakh | Lakh | T.Th | Th | H | T | O | Number Name | Expansion | |
| (i) | 475320 | - | - | 4 | 7 | 5 | 3 | 2 | 0 | Four Lakh seventy five Thousand three Hundred twenty | 4×100000 + 7×10000 + 5×1000+3×100+2×10+0 |
| (ii) | 9847215 | - | 9 | 8 | 4 | 7 | 2 | 1 | 5 | Ninety eight Lakh fourty seven Thousand two Hundred fifteen | 9×1000000+8×100000+4×10000 +7×1000+2×100+1×10+5 |
| (iii) | 97645310 | 9 | 7 | 6 | 4 | 5 | 3 | 1 | 0 | Nine crore seventy six Lakh forty five thousand three hundred ten | 9×10000000+7×1000000+6×100000 +4×10000+5×1000+3×100+1×10+ 0 |
| (iv) | 30458094 | 3 | 0 | 4 | 5 | 8 | 0 | 9 | 4 | Thirty crore fourty five lakh eighty thousand ninty four | 3×10000000+0×1000000+4×100000 +5×10000+8×1000+0×100+9×10+4 |
Q2. Read these numbers.
(i) 527864 (ii) 95432 (iii) 18950049 (iv) 70002509
(a) Write these numbers using placement boxes and then using commas in
Indian as well as International System of Numeration..
(b) Arrange these in ascending and descending order.
Q3. Take three more groups of large numbers and do the exercise given above.
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 11
Q1. You have the following digits 4, 5, 6, 0, 7 and 8. Using them, make five
numbers each with 6 digits.
(a) Put commas for easy reading.
(b) Arrange them in ascending and descending order.
Q2. Take the digits 4, 5, 6, 7, 8 and 9. Make any three numbers each with 8
digits. Put commas for easy reading.
3. From the digits 3, 0 and 4, make five numbers each with 6 digits. Use commas.
Find the greatest and the smallest numbers.
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